Best Low Calorie Gluten-Free Protein Bars

Promix Nutrition’s Coconut Protein Bar keeps things intentionally simple: whey-protein puffs supply the crisp, a marshmallow-style binder keeps it together, and real coconut flakes plus a touch of coconut oil deliver a toasty finish.

It’s a lighter, low-fat snack with 15g of protein and modest carbs—more bridge-the-gap fuel than a full meal.

Sweetness comes from a small amount of tapioca syrup (a cassava-derived syrup) rounded out by soluble fibers like inulin and tapioca-derived fiber, plus glycerin, a plant-based moisture keeper that tastes mildly sweet.

The net effect: dessert-like flavor without high-intensity sweeteners, in a gluten-free, soy-free bar.

This light 140‑calorie Salted Caramel bar leans on dairy proteins—casein first, then whey concentrate—for its backbone.

Chew and sweetness come from cassava‑derived tapioca fiber and a bit of tapioca starch, paired with allulose (a low‑calorie sugar) and a touch of glycerin (a plant‑based syrup) to keep it soft.

Fat is mostly almond butter with some palm oils and a little cream, which also helps deliver that salted‑caramel feel alongside natural flavor and a pinch of salt.

Instead of sugar or dates, it uses alternative sweeteners—mostly allulose with tiny amounts of stevia and monk fruit—so you get 1 gram of sugar and a candy‑bar texture, achieved with a modest list plus a few modern additives.

David Protein’s Chocolate Chip Cookie Dough bar is unmistakably protein-first: a blend led by milk protein isolate with whey, egg white, and a bit of collagen drives 28 grams of protein—unusually high for a 150‑calorie bar.

The sweetness and soft chew come mostly from engineered sweeteners rather than fruit or grains: a sugar alcohol, a low-calorie sugar, and a plant-based syrup provide sweetness and moisture with fewer calories than table sugar, supported by a small amount of tapioca starch (from cassava).

Fat stays intentionally low; coconut oil and cocoa butter are joined by EPG, a modified plant fat designed to feel creamy while contributing fewer digestible calories than regular oils. Flavor cues—unsweetened chocolate, Dutch-process cocoa, and peanut flour/extract—pull the doughy, bakery note together.

Count on a designed recipe: six functional additives within a 19‑ingredient list, prioritizing performance over a short, whole‑food panel.

Orgain’s Peanut Butter Protein Bar leans on plants: a blend of organic brown rice protein and pea‑protein crisps provides the lift, with peanuts and ground chia rounding it out.

It’s a lighter, 150‑calorie bar whose carbs come from refined tapioca syrup, balanced by soluble tapioca fiber (a resistant fiber) and a small amount of erythritol to keep sugars down and the chew soft.

The peanut taste comes from organic dry‑roasted peanuts, not just natural flavor.

Fats skew unsaturated from nuts and seeds, including a touch of omega‑3 ALA from chia, with only a few functional helpers like glycerin and sunflower lecithin to hold it all together.

SimplyProtein’s Peanut Butter Chocolate builds flavor from real peanuts and unsweetened chocolate, then holds it together with soy protein crisps—soy protein isolate puffed into crunchy bits.

The label stays tight: seven core ingredients by our count, plus three functional add-ins that lean on chicory-root inulin and acacia (plant fibers) and a touch of plant-derived glycerin (a syrup that keeps the bar soft) to keep sweetness gentle without artificial sweeteners.

Fats come mostly from peanuts, with small amounts of peanut and sunflower oils; carbs come from brown rice crisps and a little cane sugar, with those fibers adding body and mild sweetness.

It’s vegan and gluten-free, and it eats like a light, crisp snack rather than a dense meal replacement.

Peanut Chocolate Chip reads like a classic—roasted peanuts and real chocolate—but the nutrition is deliberately modern. The protein base is a whey‑forward blend of whey and milk protein isolates, while sweetness relies more on low‑calorie sweeteners than cane sugar.

Most of the carbs come from soluble tapioca fiber, a refined fiber from cassava that adds body and helps keep the sugar impact gentler, with erythritol (a sugar alcohol) plus stevia and monk fruit supplying sweetness without many calories.

Fats are primarily from peanuts and cocoa butter rather than added seed oils, and MOSH folds in a small "Brain Blend" featuring vitamin D3 and B12. Net effect: a light, steady‑energy snack, not a meal replacement.

Bright lemon, toasted coconut, and a creamy “white chocolate” style coating make this bar feel like a summer snack in miniature.

The protein is mostly soy protein isolate (some of it in crunchy nuggets) with a small assist from milk protein isolate in the coating, so it’s a soy-first blend with a touch of dairy.

Carbs stay low in sugar by leaning on refined fibers—chicory-root fiber (inulin/oligofructose) and soluble corn fiber—plus a bit of glycerin for softness, and stevia for sweetness. Fats come from almonds and coconut, rounded out by palm-based oils in the coating, for a mix of unsaturated and saturated fats.

There are four familiar add-ins—glycerin, sunflower lecithin, stevia, and tocopherols—to keep texture, sweetness, and freshness on point.

Mosh’s Pumpkin Spice Chocolate Chip keeps things light and plant-forward: pea protein and almonds anchor the bar, spices and cocoa bring the fall flavor, and the brand’s Brain Blend adds 100% DV vitamin B12 and 25% DV vitamin D3.

Sweetness leans on allulose—a low-calorie sugar that tastes like sugar but barely nudges blood glucose—with tiny boosts from stevia and monk fruit.

Carbs are padded by soluble tapioca fiber, a resistant dextrin refined from cassava that adds bulk and a softer chew, rather than grains; fats come mostly from almonds with a little cocoa butter and coconut oil.

There are four functional additives to keep sweetness, softness, and mixability in line, and the whole thing lands at a very snackable 150 calories.

Exo builds this bar around an unusual team: cricket flour mixed with pea protein and egg whites, which together provide 14 grams of protein in a compact 160-calorie bite. The chocolate character comes from alkalized cocoa and pockets of semi-sweet chips, while most of the sweetness is handled by allulose with a small assist from monk fruit.

Carbs lean more refined, using a cassava-based syrup (prebiotic tapioca concentrate) and pea-based crisps to hold the bar together, and fats come chiefly from sunflower butter.

The ingredient list is concise for the category—roughly 18 items with just two true additives (a touch of natural flavor and soy lecithin in the chips, which simply keeps the chocolate smooth).