Best Low Fat Gluten-Free Soy Protein Bars

Lowest Fat Protein Bars that are Soy Protein and Gluten Free
Ranking of lowest fat protein bars filtered by: Soy Protein, Gluten Free
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By Protein Bar Nerd
October 17, 2025

Rankings Overview

  1. 1. Fiber One
    Strawberries & Cream

    A 90‑calorie, strawberries‑and‑cream bar that still delivers 10g of protein—tiny package, meaningful protein.

  2. 2. TREK
    Berry Burst

    A fruit-first, vegan, gluten-free bar that skips sugar alcohols and builds its 10g of protein into airy soy crisps for a light, crunchy bite.

  3. 3. NuGo Nutrition
    Coffee

    A coffee‑shop–inspired, milk‑chocolate–coated bar that skips sugar alcohols yet stays light at 170 calories with 11g of soy protein.

  4. 4. Pure Protein
    Chocolate Deluxe

    Budget bar that eats like candy yet delivers 21g of complete dairy protein for just 180 calories—Pure Protein Chocolate Deluxe is protein-per-dollar royalty.

  5. 5. PowerBar
    Cookies N Cream

    A tri‑protein blend (whey, casein, soy) packs 20g into a light, fluffy cookies‑and‑cream bar that reads dessert but performs like a training snack.

  6. 6. SimplyProtein
    Lemon Coconut

    Combo: a bright, crispy lemon–coconut bar that packs 13g of complete vegan soy protein into 150 calories without stevia or sucralose.

  7. 7. Premier Protein
    Double Chocolate Crunch

    Thirty grams of complete protein in a chocolate‑crunch bar that eats like dessert but works like recovery fuel.

  8. 8. GNC Total Lean
    Vanilla Birthday Cake

    A frosted, sprinkle-studded birthday-cake bar that tastes like dessert yet stays snack-light—15g of soy–dairy protein at 180 calories with a candy-bar bite fans rave about.

  9. 9. think!
    White Chocolate

    A sugar-free “white chocolate” bar that actually tastes like dessert while delivering 20g of complete protein from a soy-and-dairy blend.

  10. 10. Optimum Nutrition
    Chocolate Brownie Crunch

    A cereal-crisp, chocolate-coated bar that actually crunches, delivering 20g of blended dairy-and-soy protein with just 1.8g of sugar.

Compare Best Low Fat Gluten-Free Soy Protein Bars

BarFatProteinCarbsCaloriesSugarIngredientsAdditives
Fiber One
Strawberries & Cream
210119012010
TREK
Berry Burst
2102917725120
NuGo Nutrition
Coffee
3112717013304
Pure Protein
Chocolate Deluxe
521171803246
PowerBar
Cookies N Cream
5202721013274
SimplyProtein
Lemon Coconut
513171502172
Premier Protein
Double Chocolate Crunch
6302527010133
GNC Total Lean
Vanilla Birthday Cake
615231809427
think!
White Chocolate
820242300143
Optimum Nutrition
Chocolate Brownie Crunch
720162132209

Under the Microscope

1.

Fiber One

Strawberries & Cream

Fiber One Strawberries & Cream protein bar product photo
Product image of Fiber One Strawberries & Cream protein bar
10g
Protein
2g
Fat
11g
Carbs
1g
Sugar
90
Calories
Allergens:Milk, Soybeans
Diet:Keto, Vegetarian, Gluten-Free
Total Ingredients:20

What's in the Strawberries & Cream Fiber One bar?

This is a compact, soy‑led protein bar that leans engineered on purpose: a 15‑ingredient recipe with several additives to keep sugar low and texture chewy.

Sweetness and bulk come less from sugar and more from chicory root fiber (a prebiotic plant fiber), sugar alcohols such as maltitol and isomalt (lower‑calorie sweeteners), and glycerin (a plant‑derived syrup that keeps things soft).

Real strawberry powder plus a pinch of fruit acids create the berries‑and‑cream note, while the pink hue comes from synthetic colors. The upshot is very low sugar, very low fat, modest protein, and a decidedly “snack‑sized” profile.

Protein
10
15
Fat
2
9
Carbs
11
20
Sugar
1
4
Calories
90
210

What are people saying?

Main praise: A dessert‑leaning chew with a standout 10g‑for‑90‑calories ratio—easy to stash, easy to fit into a light day, and it actually tastes like a treat.

Main criticism: The sugar‑alcohol sweeteners can bother sensitive stomachs, and the engineered texture plus artificial dyes won’t win over whole‑food purists.

Bottom Line

Best for a portion‑controlled, sweet snack with a meaningful protein boost—think coffee break, post‑dinner treat, or a light pre‑workout nibble.

2.

TREK

Berry Burst

TREK Berry Burst protein bar product photo
Product image of TREK Berry Burst protein bar
10g
Protein
2g
Fat
29g
Carbs
25g
Sugar
177
Calories
Allergens:Soybeans
Diet:Vegan, Vegetarian, Gluten-Free
Total Ingredients:12

What's in the Berry Burst TREK bar?

Think trail snack first, protein bar second: dates and raisins form the base, gluten-free oats add chew, and freeze-dried raspberries bring that tart pop.

Protein comes via crisp soy pieces—light and crunchy instead of dense—while additives stay minimal, with a little tapioca starch to hold the crisps and rice starch plus natural flavorings to keep the berry notes consistent.

Macros lean toward quick energy: higher carbs and sugars, very low fat, and modest protein. The sweetness comes entirely from fruit, including apple, pear, and grape juice concentrates—flavors your tongue reads as fruit, but sugars your body absorbs quickly.

Protein
10
15
Fat
2
9
Carbs
29
20
Sugar
25
4
Calories
177
210

What are people saying?

Main praise: Reviewers love the clean, fruit-led flavor and crunchy soy texture—no artificial aftertaste, easy to grab-and-go, and reliably tasty on the move.

Main criticism: The macro math turns some shoppers off: roughly 10g of protein alongside about 25g of sugar feels more like an energy bar, with occasional notes about dryness and value.

Bottom Line

Best for pre-run or mid-hike fuel, or anyone who prefers plant-based, fruit-derived sweetness and a light, crunchy texture without sugar alcohols. Less ideal if you’re chasing 20g of protein or minimizing sugar.

3.

NuGo Nutrition

Coffee

NuGo Nutrition Coffee protein bar product photo
Product image of NuGo Nutrition Coffee protein bar
11g
Protein
3g
Fat
27g
Carbs
13g
Sugar
170
Calories
Allergens:Milk, Soybeans
Diet:Vegetarian, Gluten-Free
Total Ingredients:30

What's in the Coffee NuGo Nutrition bar?

NuGo’s Coffee bar leans on soy for protein, chocolate for comfort, and syrups to hold it together. It’s a soy‑based bar—not whey—with 11g of protein, very little fat (3g), and carbs on the higher side from tapioca and agave syrups plus crisped rice and oats.

Sweetness lands on the sweeter side for a protein bar, but it comes from familiar foods—milk chocolate, agave, and tapioca—rather than artificial sweeteners.

The coffee vibe is largely flavoring supported by alkalized cocoa and a real milk‑chocolate coating, and it’s rounded out by a vitamin/mineral boost and two familiar helpers (acacia gum and soy lecithin) that keep the texture in line.

Protein
11
15
Fat
3
9
Carbs
27
20
Sugar
13
4
Calories
170
210

What are people saying?

Main praise: Taste and texture steal the show: crisp, candy‑bar‑like chocolate without the sugar‑alcohol aftertaste, in a light 170‑calorie package.

Main criticism: Macros skew snacky—11g protein and 13g sugar—with occasional freshness hiccups and a polarizing coffee flavor, plus dairy and soy mean it isn’t vegan or allergen‑friendly.

Bottom Line

Reach for it as a mid‑morning or pre‑workout pick‑me‑up when you want something sweet, light, and gluten‑free with some protein. Less ideal if you need ultra‑low carbs, big protein, or strictly dairy‑free/soy‑free.

4.

Pure Protein

Chocolate Deluxe

Pure Protein Chocolate Deluxe protein bar product photo
Product image of Pure Protein Chocolate Deluxe protein bar
21g
Protein
5g
Fat
17g
Carbs
3g
Sugar
180
Calories
Allergens:Milk, Tree Nuts, Peanuts, Soybeans
Diet:Gluten-Free
Total Ingredients:24

What's in the Chocolate Deluxe Pure Protein bar?

Chocolate Deluxe is built like a gym snack disguised as dessert: milk protein isolate and whey isolates drive 21g of complete protein, with a small assist from hydrolyzed gelatin.

The sweetness and chew come less from sugar and more from helpers like maltitol (a sugar alcohol made from starch) and glycerin (a plant-derived syrup), which keep sugar to 3g and create that soft, chewy bite while generally spiking blood sugar less than table sugar.

Expect roughly six functional additives overall to lock in texture and flavor; if your stomach is touchy with sugar alcohols, you may notice it at higher intakes. Fat stays light at 4.

5g and leans on fractionated palm kernel oil and cocoa butter—the former firms the chocolate coating, the latter gives cocoa its melt—plus a touch of milkfat and almond butter. Big picture: a deliberately engineered bar with low calories, strong protein, and a chocolate profile tuned for shelf life.

Protein
21
15
Fat
5
9
Carbs
17
20
Sugar
3
4
Calories
180
210

What are people saying?

Main praise: Reviewers say it tastes surprisingly close to a candy bar for the price, with a dense-chewy bite and a reliable 21g protein hit that keeps them satisfied.

Main criticism: The engineered sweetness can taste a bit artificial and may bother sensitive stomachs, and the processed ingredient list (plus collagen) won’t suit whole‑food seekers or vegetarians.

Bottom Line

Reach for it when you want a protein-forward snack or post-workout bite that’s filling without a big calorie load—and you’re fine with a more processed ingredient list and sugar alcohols.

5.

PowerBar

Cookies N Cream

PowerBar Cookies N Cream protein bar product photo
Product image of PowerBar Cookies N Cream protein bar
20g
Protein
5g
Fat
27g
Carbs
13g
Sugar
210
Calories
Allergens:Milk, Tree Nuts, Peanuts, Soybeans
Diet:Vegetarian, Gluten-Free
Total Ingredients:27

What's in the Cookies N Cream PowerBar bar?

PowerBar’s Cookies N Cream leans on a tri‑source blend—soy protein isolate, calcium caseinate, and whey protein isolate—to deliver 20 grams of protein with that classic soft chew. The cookies‑and‑cream flavor comes from a thin chocolatey coating and rice‑flour cookie bits, so it eats more like a treat than a brick.

Macros skew higher‑carb and lower‑fat (27 grams carbs, 5 grams fat, 210 calories), which translates to quick energy without a nut‑butter heaviness.

Sweetness is built on cane‑derived sugars, then softened by two functional add‑ins—maltitol syrup (a sugar alcohol) and oligofructose from chicory root—that keep texture pliable while dialing back plain sugar; they’re highly processed and can be hit‑or‑miss for sensitive stomachs.

Protein
20
15
Fat
5
9
Carbs
27
20
Sugar
13
4
Calories
210
210

What are people saying?

Main praise: Fans praise the light, fluffy chew and authentic flavor, plus 20 grams of protein that works for training—reflected in a 4.5‑star average across nearly two thousand Amazon reviews.

Main criticism: Sweetness runs high and the formula leans processed—maltitol and chicory‑root fiber included—so some report stomach grumbles, and it’s a non‑starter if you avoid dairy or soy.

Bottom Line

Best for pre‑ or post‑workout when you want quick energy and a substantial protein hit in a dessert‑leaning bar; less ideal if you avoid soy or prefer minimally processed, low‑sweetness options.

Other Flavors

6.

SimplyProtein

Lemon Coconut

SimplyProtein Lemon Coconut protein bar product photo
Product image of SimplyProtein Lemon Coconut protein bar
13g
Protein
5g
Fat
17g
Carbs
2g
Sugar
150
Calories
Allergens:Tree Nuts, Coconuts, Soybeans
Diet:Vegan, Vegetarian, Gluten-Free
Total Ingredients:17

What's in the Lemon Coconut SimplyProtein bar?

Bright lemon meets toasty coconut in a plant-based bar built on soy protein crisps. Those crisps—soy protein isolate lightly bound with tapioca—deliver complete vegan protein while keeping the texture light and snappy.

Energy comes from oats and brown‑rice crisps, steadied by chicory root fiber, with fats kept modest via cashew butter, sunflower oil, and a sprinkle of coconut. Sweetness leans on a small amount of cane sugar, rounded out by vegetable glycerin (a plant‑derived syrup that keeps bars moist) and natural flavors.

The result is a gluten‑free, dairy‑free bar with mid‑pack protein and very low sugar—more crisp snack than candy‑bar clone.

Protein
13
15
Fat
5
9
Carbs
17
20
Sugar
2
4
Calories
150
210

What are people saying?

Main praise: Fans love the crisp, airy texture and the restraint—13g of vegan protein, very low sugar, and no stevia or sucralose—with a bright lemon‑coconut flavor that plays well with coffee.

Main criticism: Detractors call it dry or powdery and find the lemon coconut flavor polarizing, and a few sensitive stomachs don’t love the chicory root fiber and glycerin.

Bottom Line

Choose it if you want a light, crunchy, plant-based snack between meals or a gentle post‑workout bite with a citrus twist—and you prefer low sugar without high‑intensity sweeteners. Skip it if you avoid soy or tree nuts, or if you want a dense, brownie-like protein bar.

7.

Premier Protein

Double Chocolate Crunch

Premier Protein Double Chocolate Crunch protein bar product photo
Product image of Premier Protein Double Chocolate Crunch protein bar
30g
Protein
6g
Fat
25g
Carbs
10g
Sugar
270
Calories
Allergens:Milk, Soybeans
Diet:Gluten-Free
Total Ingredients:13

What's in the Double Chocolate Crunch Premier Protein bar?

Premier Protein’s Double Chocolate Crunch leans into its name: two kinds of cocoa build a brownie‑deep flavor, while a soy–whey protein blend (with a touch of collagen) powers a hefty 30g of protein.

It’s a bigger, dessert‑leaning bar with more carbs and calories than average, sweetened with table sugar and helped along by glycerin—a plant‑derived syrup that keeps bars soft—and chicory‑root fiber, rather than oats or dates.

Fats stay low and come mainly from palm kernel oil to keep the chocolate coating stable. The ingredient list is relatively short for this aisle, with a couple of modern add‑ons, so what you taste is classic chocolate built on purpose‑designed bar tech.

Protein
30
15
Fat
6
9
Carbs
25
20
Sugar
10
4
Calories
270
210

What are people saying?

Main praise: Fans love the rare 30g protein hit wrapped in a soft‑meets‑crunch chocolate texture that satisfies cravings without blowing past 300 calories.

Main criticism: Critics call the chocolate underwhelming and the sweetness a bit engineered, with some reporting a gummy chew, occasional chicory‑fiber tummy grumbles, and a coating that can melt in warm weather.

Bottom Line

Best for post‑workout refueling or anyone who wants a sweet, chocolatey bar that actually moves the protein needle. Less ideal for ingredient purists or people who avoid soy or milk.

8.

GNC Total Lean

Vanilla Birthday Cake

GNC Total Lean Vanilla Birthday Cake protein bar product photo
Product image of GNC Total Lean Vanilla Birthday Cake protein bar
15g
Protein
6g
Fat
23g
Carbs
9g
Sugar
180
Calories
Allergens:Milk, Soybeans
Diet:Vegetarian, Gluten-Free
Total Ingredients:42

What's in the Vanilla Birthday Cake GNC Total Lean bar?

Meet GNC Total Lean Vanilla Birthday Cake: a soy–dairy protein bar wrapped in a yogurt-style frosting with rainbow sprinkles and real vanilla. You get 15g of protein with a higher-than-average carb and sugar profile, yet the total stays a tidy 180 calories—squarely in snack territory.

The frosting and sprinkles deliver the cake moment; soluble corn fiber (a refined fiber from corn starch) and a touch of glycerin keep the center soft and help steady the blood-sugar rise.

It’s a modern build with seven additives to lock in texture and sweetness, trading a short ingredient list for that candy-bar bite.

Protein
15
15
Fat
6
9
Carbs
23
20
Sugar
9
4
Calories
180
210

What are people saying?

Main praise: Taste steals the show: reviewers love the soft, frosting-coated bite and candy-bar feel, with 15g of protein at 180 calories making it an easy, repeat-buy snack.

Main criticism: Sweet and engineered won’t suit everyone—some notice sucralose or a lingering aftertaste, others balk at the processed ingredient list, and 15g of protein reads more snack than meal.

Bottom Line

Best for sweet-tooth moments and post-workout treats when you want something that tastes like cake but still gives you 15g of protein; not ideal if you avoid soy, dairy, or sucralose.

9.

think!

White Chocolate

think! White Chocolate protein bar product photo
Product image of think! White Chocolate protein bar
20g
Protein
8g
Fat
24g
Carbs
0g
Sugar
230
Calories
Allergens:Milk, Tree Nuts, Soybeans
Diet:Vegetarian, Gluten-Free
Total Ingredients:14

What's in the White Chocolate think! bar?

think! ’s White Chocolate Protein Bar leans on modern food science to deliver a dessert-leaning bite with 20g of protein and zero labeled sugars.

The protein comes from a soy-and-dairy blend, so you’re getting complete protein rather than a single-source compromise.

The white-chocolate profile is built with natural flavor and a creamy fat mix from almond butter, sunflower oil, and a bit of palm kernel oil—no cocoa butter—landing at 8 grams of mostly unsaturated fat with some saturated for structure.

Carbs (24g) come largely from maltitol syrup and vegetable glycerin, refined sweeteners that keep sugars at zero while creating a soft chew and typically gentler blood-sugar swings than table sugar. A few purpose-built additives keep it soft and cohesive, which is why it eats like a treat instead of a brick.

Protein
20
15
Fat
8
9
Carbs
24
20
Sugar
0
4
Calories
230
210

What are people saying?

Main praise: It tastes like a treat and keeps you full—20g of complete protein with a chewy, creamy texture that reviewers consistently praise.

Main criticism: Sugar alcohols are the sticking point: some people report bloating or aftertastes, and at 230 calories with soy/dairy/almond allergens, it’s not for everyone.

Bottom Line

Best for people who want a zero‑sugar, higher‑protein option that actually satisfies—post‑workout, between meetings, or as a sweet tooth truce. Skip it if you avoid soy or dairy, or if sugar alcohols don’t sit well with you.

10.

Optimum Nutrition

Chocolate Brownie Crunch

Optimum Nutrition Chocolate Brownie Crunch protein bar product photo
Product image of Optimum Nutrition Chocolate Brownie Crunch protein bar
20g
Protein
7g
Fat
16g
Carbs
2g
Sugar
213
Calories
Allergens:Milk, Soybeans
Diet:Vegetarian, Gluten-Free
Total Ingredients:20

What's in the Chocolate Brownie Crunch Optimum Nutrition bar?

Chocolate Brownie Crunch earns its name with a cocoa-rich coating and soy-protein crispies that stay snappy. Under the hood, it’s a blended approach: soy for the crunch plus whey and milk proteins for a complete amino profile, landing 20g of protein at 213 calories.

Sweetness and texture lean on refined fibers and modern sweeteners—think chicory-root fiber/polydextrose and a sugar alcohol called isomalt—so the sugar stays low at 1. 8g.

The tradeoff is a longer ingredient list (about 20 items and roughly nine modern additives) to make that work. Expect a few common helpers—emulsifiers to smooth the coating and glycerol to keep it soft—so the label reads more engineered treat than five-ingredient snack.

Protein
20
15
Fat
7
9
Carbs
16
20
Sugar
2
4
Calories
213
210

What are people saying?

Main praise: Texture takes the win: light, crunchy, and easy to eat—backed by 20g of protein, moderate calories, and a chocolate-forward flavor.

Main criticism: Temper brownie dreams: it eats more like a cocoa-crisp cereal bar, and the fiber-plus-sugar-alcohol formula can bother sensitive stomachs (and macros vary across ON’s flavors).

Bottom Line

slump. Skip if soy or sugar alcohols don’t sit well with you.

Other Flavors