Best Low Sugar Keto Protein Bars

Lowest Sugar Protein Bars that are Keto and Vegetarian
Ranking of lowest sugar protein bars filtered by: Keto, Vegetarian
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By Protein Bar Nerd
October 17, 2025

Rankings Overview

  1. 1. Quest Nutrition
    Oatmeal Chocolate Chip

    A soft oatmeal-cookie chew with real chocolate and 20g of fast-plus-slow dairy protein in just 180 calories—an unusually satisfying macro play for a sweet-leaning bar.

  2. 2. KIND
    Sweet & Salty Caramel Peanut Crisp

    A peanut-first crunch bar that pairs 20g of soy-based protein with just 1g of sugar, using allulose and fiber instead of syrupy sweeteners.

  3. 3. Atkins
    Strawberry Shortcake

    A dessert-leaning strawberry shortcake bar that packs 15g protein and about 1 gram of sugar into 190 calories by using a soy–whey blend, refined fibers, and sucralose instead of dates or syrups.

  4. 4. No Cow
    Dipped Chocolate Mint Cookie

    Vegan bar that hits 20g of protein at just 200 calories—and the chocolate-mint dip softens plant-protein grit better than most.

  5. 5. Dang Foods
    Toasted Coconut

    Combo: a vegan, keto-friendly bar that skips sugar alcohols yet still tastes like real toasted coconut.

  6. 6. IQBAR
    Peanut Butter Chip

    Vegan peanut‑butter‑and‑chocolate bar with 1g sugar and no sugar alcohols that still tastes soft and satisfying—plus an unusually high hit of vitamin E and a pinch of lion’s mane.

  7. 7. Keto Bars
    Mint Chocolate

    Vegan-keto bar built on real dark chocolate and peppermint oil, it delivers 19g fat and just 1g sugar for steady, dessert-adjacent energy—more compact truffle than protein brick.

  8. 8. Atlas
    Vanilla Almond

    Atlas Vanilla Almond delivers 20g of grass-fed dairy protein with only 1g of sugar, sweetened by monk fruit and backed by a small dose of KSM-66 ashwagandha—an uncommon, functional twist.

  9. 9. Fiber One
    Chocolate Fudge

    A 90‑calorie chocolate‑fudge bar that still packs 10g of protein and a soft, fudgy chew—unusually efficient for a dessert‑leaning snack.

  10. 10. MOSH
    Chocolate Brownie Crunch

    Real brownie flavor and almond crunch at just 160 calories and 0.5 grams of sugar, built on a whey‑forward protein blend and rounded out with a restrained “brain blend.”

Compare Best Low Sugar Keto Protein Bars

BarSugarProteinCarbsFatCaloriesIngredientsAdditives
Quest Nutrition
Oatmeal Chocolate Chip
120247180165
KIND
Sweet & Salty Caramel Peanut Crisp
1202413240163
Atkins
Strawberry Shortcake
1151810190234
No Cow
Dipped Chocolate Mint Cookie
120257200267
Dang Foods
Toasted Coconut
191116210152
IQBAR
Peanut Butter Chip
1121312180171
Keto Bars
Mint Chocolate
16151922092
Atlas
Vanilla Almond
1201810210153
Fiber One
Chocolate Fudge
11010390174
MOSH
Chocolate Brownie Crunch
112188160225

Under the Microscope

1.

Quest Nutrition

Oatmeal Chocolate Chip

Quest Nutrition Oatmeal Chocolate Chip protein bar product photo
Product image of Quest Nutrition Oatmeal Chocolate Chip protein bar
20g
Protein
7g
Fat
24g
Carbs
1g
Sugar
180
Calories
Allergens:Milk, Tree Nuts, Wheat, Soybeans
Diet:Keto, Vegetarian, Gluten-Free
Total Ingredients:16

What's in the Oatmeal Chocolate Chip Quest Nutrition bar?

Quest’s Oatmeal Chocolate Chip is built on a milk protein isolate plus whey protein isolate blend, delivering 20g of complete dairy protein with minimal lactose. The oatmeal-cookie DNA comes from oats, almonds, cinnamon, and real chocolate, while sweetness leans on fiber and modern low-calorie sweeteners rather than cane sugar.

Calories land on the lighter side at 180, the carbs look higher on the label but many are fiber or sugar alcohols, and fat is a modest mix from almonds and cocoa butter.

You’re looking at a short list of whole foods supported by five functional additives to keep it chewy and sweet without piling on sugar.

Protein
20
15
Fat
7
9
Carbs
24
20
Sugar
1
4
Calories
180
210

What are people saying?

Main praise: Fans love the soft, chewy oatmeal-cookie profile, real chocolate chunks, and how full they stay given the strong 20g-for-180-calorie macro math.

Main criticism: Some taste a lingering sweetener aftertaste and report occasional sugar-alcohol tummy grumbles, with firmness creeping in as bars age and allergens ruling it out for a few diets.

Bottom Line

Best for dessert-leaning protein snacks or post-workout bites when you want staying power without much sugar—so long as you’re comfortable with dairy and sweeteners like erythritol and stevia.

2.

KIND

Sweet & Salty Caramel Peanut Crisp

KIND Sweet & Salty Caramel Peanut Crisp protein bar product photo
Product image of KIND Sweet & Salty Caramel Peanut Crisp protein bar
20g
Protein
13g
Fat
24g
Carbs
1g
Sugar
240
Calories
Allergens:Milk, Peanuts, Soybeans
Diet:Keto, Vegetarian, Gluten-Free
Total Ingredients:16

What's in the Sweet & Salty Caramel Peanut Crisp KIND bar?

KIND's Sweet & Salty Caramel Peanut Crisp starts with what you taste first: real peanuts, a clean hit of sea salt, and a caramel profile built without a syrupy sugar base.

The 20g of protein comes mostly from soy protein isolate, a complete plant protein, with a bit of milk powder and peanut protein along for the ride.

Sweetness and chew rely on allulose, a low-calorie sugar that tastes like sugar, plus soluble fibers from tapioca and chicory, with a little tapioca starch to keep those crisp bits intact.

Palm kernel oil helps the bar hold its shape - more of a saturated fat - balanced by the mostly monounsaturated fats found naturally in peanuts. You'll also see a short list of functional helpers, about three additives, like lecithin to keep things blended and vitamin E to protect the oils.

Protein
20
15
Fat
13
9
Carbs
24
20
Sugar
1
4
Calories
240
210

What are people saying?

Main praise: Reviewers rave about the salty-sweet, real-peanut crunch and the lack of chalky protein aftertaste, with strong ratings to match the 20g of protein.

Main criticism: Sensitive stomachs report rumbling from chicory fiber and allulose, and some find the texture too hard or the ingredient list too engineered, palm kernel oil included.

Bottom Line

Best for peanut lovers who want a high‑protein, low‑sugar, crunchy bar for post‑workout or an afternoon hold‑you‑over—especially if you do well with chicory root fiber and allulose. Skip if you avoid soy, dairy, or peanuts, or if you’re sensitive to added fibers.

3.

Atkins

Strawberry Shortcake

Atkins Strawberry Shortcake protein bar product photo
Product image of Atkins Strawberry Shortcake protein bar
15g
Protein
10g
Fat
18g
Carbs
1g
Sugar
190
Calories
Allergens:Milk, Tree Nuts, Coconuts, Soybeans
Diet:Keto, Vegetarian, Gluten-Free
Total Ingredients:23

What's in the Strawberry Shortcake Atkins bar?

Atkins’ Strawberry Shortcake leans on a soy-first protein blend backed by whey to deliver 15 grams of complete protein without a sugary coating.

Sugar stays extremely low because the carbs come mostly from refined fibers such as soluble corn fiber and polydextrose, which are processed from corn starch to add bulk and chew without acting like regular sugar.

A small amount of vegetable glycerin, a plant-derived syrup that holds moisture, keeps the bar soft; an emulsifier (soy lecithin) helps it hold together; and sucralose provides the sweetness — together these four core additive types create a dessert-like texture at low net carbs.

Fat runs a bit higher for the size and comes largely from palm kernel, palm, and coconut oils for that creamy shortcake bite, with sunflower oil and a sprinkle of almonds rounding it out.

Real strawberries, natural flavors, and vegetable juice color supply the fruit note and blush.

Protein
15
15
Fat
10
9
Carbs
18
20
Sugar
1
4
Calories
190
210

What are people saying?

Main praise: It reliably crushes dessert cravings without a sugar crash, tastes surprisingly treat-like, and delivers a convenient 15g of protein that’s easy to stash in a bag or desk.

Main criticism: The formula is highly processed and uses sucralose, the texture divides reviewers, added fibers can bother sensitive stomachs, and at 190 calories it’s a snack rather than a meal.

Bottom Line

Best for low-carb or keto snackers who want a sweet-tasting bar that won’t spike sugar and don’t mind artificial sweeteners or a more engineered ingredient list. Not ideal if you avoid soy or dairy, prefer only whole-food bars, or need a true meal replacement.

4.

No Cow

Dipped Chocolate Mint Cookie

No Cow Dipped Chocolate Mint Cookie protein bar product photo
Product image of No Cow Dipped Chocolate Mint Cookie protein bar
20g
Protein
7g
Fat
25g
Carbs
1g
Sugar
200
Calories
Allergens:Tree Nuts
Diet:Keto, Vegan, Vegetarian, Gluten-Free
Total Ingredients:26

What's in the Dipped Chocolate Mint Cookie No Cow bar?

Plant-powered and dipped in chocolate, No Cow’s Dipped Chocolate Mint Cookie packs 20g of pea-and-brown-rice protein into 200 calories with just 1g of sugar. Most carbs come from refined soluble fibers rather than table sugar, and fat lands at a moderate 7g thanks to a palm-oil shell with a nudge from almonds.

To pull off that low-sugar sweetness and snappy coating, the recipe uses seven modern additives—ingredients that keep the bar soft, help the chocolate flow, and sweeten without many calories. Cocoa supplies the cookie note while natural mint flavor delivers the cooling finish.

Protein
20
15
Fat
7
9
Carbs
25
20
Sugar
1
4
Calories
200
210

What are people saying?

Main praise: Elite macro efficiency for a vegan bar—20g protein at 200 calories with 1g sugar—and the dipped shell wins converts on texture and flavor while keeping things dairy- and gluten-free.

Main criticism: Batches can swing from soft to chalky, and the erythritol/stevia blend plus refined fibers can leave a cool aftertaste or GI grumbles for some.

Bottom Line

Choose it if you want a low-sugar, plant-based protein hit after a workout or between meetings and you like mint chocolate. Skip it if sugar alcohols bother your stomach or if you want a candy-bar experience above all else.

5.

Dang Foods

Toasted Coconut

Dang Foods Toasted Coconut protein bar product photo
Product image of Dang Foods Toasted Coconut protein bar
9g
Protein
16g
Fat
11g
Carbs
1g
Sugar
210
Calories
Allergens:Tree Nuts, Coconuts
Diet:Keto, Vegan, Vegetarian, Gluten-Free
Total Ingredients:15

What's in the Toasted Coconut Dang Foods bar?

Dang Foods’ Toasted Coconut Protein Bar is firmly plant-powered: pea protein for the muscle piece, nuts and seeds for structure, and real coconut for the toasty, tropical note. It’s a fat-forward snack with 16g of fat, 9g of protein, 11g of carbs, and just 1g of sugar in 210 calories.

Sweetness comes from chicory root fiber—a prebiotic extracted from chicory root that adds body and gentle sweetness without acting like regular sugar—and a light touch of stevia. The ingredient list is short, with two small add-ins (an emulsifier and a non-caloric sweetener) to keep texture and flavor in line; the rest reads like a pantry.

It’s vegan, gluten-free, and keto-friendly.

Protein
9
15
Fat
16
9
Carbs
11
20
Sugar
1
4
Calories
210
210

What are people saying?

Main praise: Reviewers love the real coconut flavor and just‑sweet‑enough profile, paired with a straightforward, real‑food ingredient list that keeps them full for hours.

Main criticism: Texture can read dry or crumbly, the protein is lighter than gym‑style bars, and chicory root fiber may bother sensitive stomachs.

Bottom Line

Best for coconut lovers who want a low-carb, plant-based snack that’s lightly sweet and keeps you full between meals. Less ideal if you need a 20g post-workout hit or prefer soft, dessert-like bars.

6.

IQBAR

Peanut Butter Chip

IQBAR Peanut Butter Chip protein bar product photo
Product image of IQBAR Peanut Butter Chip protein bar
12g
Protein
12g
Fat
13g
Carbs
1g
Sugar
180
Calories
Allergens:Tree Nuts, Coconuts, Peanuts
Diet:Keto, Vegan, Vegetarian, Gluten-Free
Total Ingredients:17

What's in the Peanut Butter Chip IQBAR bar?

IQBAR’s Peanut Butter Chip leans into real roasted peanuts and cocoa for flavor, then taps pea protein and peanut flour for the muscle. Instead of syrupy sweeteners, it uses a prebiotic fiber blend refined from cassava and other plants to keep sugars low and the chew pleasantly soft.

The richness comes from peanuts and almonds with a little coconut oil and cocoa butter, so fats run higher and the texture skews creamy. The modern add‑ins stay short and purposeful: stevia for sweetness, a boost of vitamin E, and a small sprinkle of lion’s mane for a functional flourish.

Protein
12
15
Fat
12
9
Carbs
13
20
Sugar
1
4
Calories
180
210

What are people saying?

Main praise: Reviewers applaud the soft‑meets‑crunchy peanut flavor, satisfying feel, and very low sugar without sugar alcohols—plus the unusual vitamin E bonus.

Main criticism: A minority notice a stevia or pea‑protein aftertaste, find 12g protein too light, or feel the added fiber adds up if they eat more than one.

Bottom Line

Choose this if you want a dairy‑free, low‑sugar peanut‑butter‑and‑chocolate snack that won’t blow your carb budget. It’s ideal as a mid‑morning holdover or a calm pre‑commute bite rather than a heavy post‑workout protein fix.

7.

Keto Bars

Mint Chocolate

Keto Bars Mint Chocolate protein bar product photo
Product image of Keto Bars Mint Chocolate protein bar
6g
Protein
19g
Fat
15g
Carbs
1g
Sugar
220
Calories
Allergens:Tree Nuts, Coconuts
Diet:Keto, Vegan, Vegetarian, Gluten-Free
Total Ingredients:9

What's in the Mint Chocolate Keto Bars bar?

Chocolate liquor and Dutch-processed cocoa build a legit dark-chocolate base, peppermint oil snaps the finish, and almonds with coconut provide chew. Under the hood it’s fat-forward and keto-leaning: 19g of fats, 6g of plant-based protein, and 1g of sugar, with sweetness from erythritol and a little stevia.

The label is short and mostly pantry-familiar; the modern sweeteners keep sugars low without sticky syrups, and the Dutch process smooths cocoa’s bitterness (with the trade-off of fewer cocoa flavanols). In practice, it eats like a small, satisfying fat snack rather than a muscle builder.

Protein
6
15
Fat
19
9
Carbs
15
20
Sugar
1
4
Calories
220
210

What are people saying?

Main praise: Fans say it nails true keto macros with a short, recognizable ingredient list and a rich dark-chocolate-mint flavor that keeps you full—vegan keto without the fiber-syrup baggage.

Main criticism: The stevia/erythritol combo brings a cooling or lingering aftertaste and occasional gritty crunch, and with only 6g protein it underwhelms the gym crowd—reflected in a 3.7-star average across 2,600+ ratings.

Bottom Line

Choose it as a plant‑based, low‑net‑carb treat or afternoon holdover when you want satiating, steady energy and a mint‑dark‑chocolate fix. Skip it for post‑workout recovery unless you’re pairing it with an extra protein source.

8.

Atlas

Vanilla Almond

Atlas Vanilla Almond protein bar product photo
Product image of Atlas Vanilla Almond protein bar
20g
Protein
10g
Fat
18g
Carbs
1g
Sugar
210
Calories
Allergens:Milk, Tree Nuts, Coconuts
Diet:Keto, Vegetarian, Gluten-Free
Total Ingredients:15

What's in the Vanilla Almond Atlas bar?

Atlas’s Vanilla Almond is a protein-forward bar built on a grass-fed whey-and-milk blend, almond butter, and a gentle vanilla finish.

It delivers 20g of protein for 210 calories with just 1g of sugar, leaning on monk fruit (a concentrated fruit extract used in tiny amounts) and a refined soluble plant fiber to provide sweetness and a soft chew.

Almonds and a bit of coconut oil bring the richness and staying power. There’s even a sprinkle of KSM-66 ashwagandha, a functional add-in some will welcome and others may prefer to skip.

Overall, the recipe stays concise and favors protein and fiber over syrupy binders.

Protein
20
15
Fat
10
9
Carbs
18
20
Sugar
1
4
Calories
210
210

What are people saying?

Main praise: Reviewers say Atlas threads the needle: 20g protein, minimal sugar, a cleaner ingredient list, and a soft, surprisingly filling chew.

Main criticism: The dividing line is taste and texture—some find vanilla understated with a dry or sandy bite, notice a monk fruit aftertaste, and question the ashwagandha (and the premium price).

Bottom Line

Choose it if you want a low‑sugar, gluten‑free, keto‑friendly bar for post‑workout or steady energy, and you’re comfortable with dairy protein and a light touch of adaptogens.

9.

Fiber One

Chocolate Fudge

Fiber One Chocolate Fudge protein bar product photo
Product image of Fiber One Chocolate Fudge protein bar
10g
Protein
3g
Fat
10g
Carbs
1g
Sugar
90
Calories
Allergens:Milk, Soybeans
Diet:Keto
Total Ingredients:17

What's in the Chocolate Fudge Fiber One bar?

Fiber One’s Chocolate Fudge Protein Bar is a deliberately light take on a chocolate fix: 90 calories, 10g protein, and a soft bite.

The protein comes from a blend—soy protein isolate does most of the lifting, with whey proteins and calcium caseinate (dairy) plus a small amount of collagen to keep the texture pliable.

Carbs lean on chicory root extract—a refined soluble fiber from chicory—and low‑calorie sweeteners rather than fruit or oats, while the fudge character is built from Dutch‑processed cocoa and cocoa powder. You’ll see 17 ingredients and four helper additives—emulsifiers and low‑calorie sweeteners—to keep it soft and sweet while holding calories down.

Big picture: it’s engineered for sweetness and softness without the calorie load.

Protein
10
15
Fat
3
9
Carbs
10
20
Sugar
1
4
Calories
90
210

What are people saying?

Main praise: Fans rave about the 10g‑for‑90‑calories deal and a genuinely chocolaty, chewy‑meets‑crunchy bite that curbs dessert cravings without feeling heavy.

Main criticism: Critics pick up artificial notes and report stomach upset from maltitol if they eat more than one, and the long, refined‑ingredient list (plus rising prices) doesn’t help.

Bottom Line

Reach for it when you want a low‑calorie chocolate fix with a meaningful protein bump—think afternoon slump, after‑dinner sweet craving, or a light pre‑meeting hold‑over. Less ideal if you’re sensitive to sugar alcohols or avoiding soy/dairy/collagen.

10.

MOSH

Chocolate Brownie Crunch

MOSH Chocolate Brownie Crunch protein bar product photo
Product image of MOSH Chocolate Brownie Crunch protein bar
12g
Protein
8g
Fat
18g
Carbs
1g
Sugar
160
Calories
Allergens:Milk, Tree Nuts
Diet:Keto, Vegetarian, Gluten-Free
Total Ingredients:22

What's in the Chocolate Brownie Crunch MOSH bar?

This bar leans whey‑first: a trio of whey isolate, whey concentrate, and grass‑fed milk protein isolate delivers complete protein that most people digest easily, without the heavy dairy feel. Brownie character comes from cocoa powder, unsweetened chocolate, and cocoa butter, with almonds supplying the literal crunch.

Carbs skew modern—soluble tapioca fiber does most of the lifting, while small amounts of erythritol and vegetable glycerin keep it sweet and soft, with a hint of organic agave to bind.

There are five modern helpers here—erythritol (a sugar alcohol), vegetable glycerin (plant‑based syrup for moisture), sunflower lecithin (an emulsifier), plus stevia and monk fruit (high‑intensity sweeteners)—used to nail dessert flavor with almost no sugar.

Fats come mainly from almonds and cocoa butter, so the 160‑calorie bar winds up very low in sugar (0. 5 grams) and moderate in fat, with a small “brain blend” of citicoline, lion’s mane, B12, and D3 as a functional accent.

Protein
12
15
Fat
8
9
Carbs
18
20
Sugar
1
4
Calories
160
210

What are people saying?

Main praise: A genuinely tasty, sturdy chocolate bar that eats like a treat while keeping calories and sugar in check—earning raves (and a SELF Pantry Award) for flavor, texture, and toss‑in‑your‑bag durability.

Main criticism: Price feels high for the size, protein lands at snack level, some flavors lean a bit "protein‑bar‑ish," and the low‑sugar formula plus brain‑blend vibe won’t suit every palate or stomach.

Bottom Line

A lighter, low‑sugar snack between meals or a pre‑meeting/post‑workout bite for folks who prefer whey protein and want chocolate without a sugar crash. Not ideal as a full meal replacement, for vegans, or for people avoiding dairy or nuts.