High Protein Low Carb S’mores Protein Brownies – Gooey, Chocolatey, and Guilt-Friendly
If s’mores and brownies had a fitness-minded baby, this would be it. These High Protein Low Carb S’mores Protein Brownies deliver a fudgy, marshmallowy bite with a graham crunch—without the sugar crash. They’re rich, satisfying, and surprisingly light on carbs thanks to smart swaps.
Best of all, they’re easy to make and use simple pantry ingredients. Whether you’re craving a post-workout treat or a cozy dessert, this checks both boxes.
High Protein Low Carb S'mores Protein Brownies - Gooey, Chocolatey, and Guilt-Friendly
Ingredients
Method
- Preheat your oven to 350°F (175°C). Line an 8x8-inch pan with parchment and lightly spray. Leave some overhang for easy lifting.
- In a large bowl, whisk almond flour, protein powder, cocoa, sweetener, baking soda, and salt until no lumps remain. Stir in the low-carb graham crumbs.
- In a separate bowl, whisk eggs, Greek yogurt, almond milk, oil, and vanilla until smooth. The yogurt helps keep things moist without adding many carbs.
- Fold the wet mixture into the dry mixture with a spatula. Do not overmix. The batter will be thick but spreadable.
- Stir in half of the chocolate chips. Spread the batter evenly into the prepared pan.
- Bake for 14–18 minutes, until the edges are set and a toothpick comes out with a few moist crumbs. Do not overbake; protein bakes can dry out quickly.
- Remove from the oven. Sprinkle marshmallows and remaining chocolate chips evenly over the top. Add crushed low-carb graham cookie pieces if using.
- Switch the oven to broil on low. Return the pan to the oven for 30–90 seconds, watching closely until the marshmallows are golden and toasty. Do not walk away.
- Cool in the pan for at least 20–30 minutes. Lift out using parchment and slice into 12 squares. For the cleanest cuts, chill for 30 minutes before slicing.
What Makes This Special
These brownies keep the classic s’mores flavor while dialing up protein and keeping carbs in check. We use almond flour and a touch of low-carb graham-style crumb for that familiar base.
A blend of cocoa and chocolate protein powder adds deep flavor and a soft, fudgy texture. Topped with mini marshmallows and a sprinkle of chocolate chips, they toast up beautifully under the broiler for that campfire vibe—indoors.
Ingredients
- Dry Ingredients
- 1/2 cup blanched almond flour
- 1/3 cup chocolate whey or whey-casein blend protein powder (not isolate-only if possible)
- 1/4 cup unsweetened cocoa powder
- 3 tablespoons granular erythritol or allulose (adjust to taste)
- 1/4 teaspoon baking soda
- 1/4 teaspoon fine sea salt
- 1/4 cup low-carb graham-style crumbs (store-bought keto graham cookies crushed, or almond flour with 1/2 teaspoon cinnamon and a pinch of sweetener)
- Wet Ingredients
- 2 large eggs, room temperature
- 1/3 cup Greek yogurt (2% or 0%)
- 2 tablespoons unsweetened almond milk
- 2 tablespoons melted coconut oil or light olive oil
- 1 teaspoon vanilla extract
- Mix-ins and Toppings
- 1/4 cup sugar-free dark chocolate chips, divided
- 3/4 cup mini marshmallows (use sugar-free if desired)
- Optional: 1 tablespoon crushed low-carb graham cookies for topping
Instructions
- Preheat your oven to 350°F (175°C). Line an 8×8-inch pan with parchment and lightly spray.
Leave some overhang for easy lifting.
- In a large bowl, whisk almond flour, protein powder, cocoa, sweetener, baking soda, and salt until no lumps remain. Stir in the low-carb graham crumbs.
- In a separate bowl, whisk eggs, Greek yogurt, almond milk, oil, and vanilla until smooth. The yogurt helps keep things moist without adding many carbs.
- Fold the wet mixture into the dry mixture with a spatula.
Do not overmix. The batter will be thick but spreadable.
- Stir in half of the chocolate chips. Spread the batter evenly into the prepared pan.
- Bake for 14–18 minutes, until the edges are set and a toothpick comes out with a few moist crumbs. Do not overbake; protein bakes can dry out quickly.
- Remove from the oven.
Sprinkle marshmallows and remaining chocolate chips evenly over the top. Add crushed low-carb graham cookie pieces if using.
- Switch the oven to broil on low. Return the pan to the oven for 30–90 seconds, watching closely until the marshmallows are golden and toasty. Do not walk away.
- Cool in the pan for at least 20–30 minutes.
Lift out using parchment and slice into 12 squares. For the cleanest cuts, chill for 30 minutes before slicing.
Storage Instructions
- Room Temperature: Keep in an airtight container for up to 24 hours if your kitchen is cool.
- Refrigerator: Store in a sealed container for 4–5 days. This helps the brownies firm up and stay moist.
- Freezer: Freeze individual squares wrapped in parchment and placed in a freezer bag for up to 2 months.
Thaw overnight in the fridge or gently warm in the microwave for 10–15 seconds.
- Reheating Tip: A quick 5–7 seconds in the microwave softens the marshmallow without drying the brownie.
Benefits of This Recipe
- High Protein: Protein powder and Greek yogurt help support satiety and muscle recovery.
- Lower Carb: Almond flour and low-carb sweeteners keep sugars down without losing flavor.
- Indulgent Flavor: You still get the toasted marshmallow, chocolate, and graham vibe.
- Simple Ingredients: Easy-to-find pantry staples, no fancy techniques.
- Customizable: Fits different dietary needs with easy swaps.
Common Mistakes to Avoid
- Using only whey isolate: Isolate can make brownies dry and rubbery. A whey or whey-casein blend works better.
- Overbaking: Pull them when slightly underdone. They continue cooking as they cool.
- Skipping the parchment: Marshmallows can stick.
Parchment makes removal and slicing easy.
- Too much sweetener: Some sugar alcohols can crystallize. Start moderate, then adjust next time to your preference.
- Broiling too long: Marshmallows go from golden to burnt fast. Watch like a hawk.
Variations You Can Try
- Peanut Butter Swirl: Warm 2 tablespoons natural peanut butter and swirl over the batter before baking.
- Double Chocolate: Add 1 tablespoon melted sugar-free dark chocolate to the wet mixture for extra richness.
- Mint S’mores: Use a scoop of mint chocolate protein and add a drop of peppermint extract.
- Gluten-Free Graham: If avoiding gluten, ensure your graham-style crumbs are certified gluten-free.
- Dairy-Free: Use plant-based protein (a pea-rice blend), coconut yogurt, and dairy-free chocolate chips.
Note: texture will be slightly denser.
- Espresso Boost: Add 1 teaspoon instant espresso to the dry mix to deepen the chocolate flavor.
FAQ
Can I use a different flour?
Almond flour keeps these low carb and tender. Coconut flour won’t swap 1:1. If you must use it, reduce to about 2–3 tablespoons and add an extra tablespoon of almond milk, but expect a drier, cakier result.
What protein powder works best?
A whey or whey-casein blend gives the best texture.
Plant-based powders can work but may need an extra 1–2 tablespoons almond milk to avoid dryness. Avoid pure whey isolate if possible.
Do I have to add marshmallows?
No. You can skip them to reduce sugar and carbs further.
For a similar effect, top with a few extra chocolate chips and a sprinkle of crumbled low-carb graham after baking.
How sweet are these?
They’re lightly sweet, leaning rich and chocolatey. If you like a sweeter brownie, add 1–2 extra tablespoons of allulose or your preferred sweetener.
Can I make them in a loaf pan?
Yes, but the batter will be thicker and baking time may increase by 3–6 minutes. Watch for the same visual cues and avoid overbaking.
How do I calculate macros?
Plug your specific brands into a nutrition calculator.
As a ballpark, each of 12 squares tends to land around moderate calories with higher protein and lower net carbs compared to traditional brownies, but exact numbers vary by ingredients.
Why did my brownies turn out dry?
They were likely overbaked or used a very lean protein powder. Try a shorter bake time, add a tablespoon more almond milk, or switch to a blended protein.
Can I make these egg-free?
You can try two flax eggs (2 tablespoons ground flax + 5 tablespoons water). Texture will be denser and less fudgy, but still tasty.
Wrapping Up
These High Protein Low Carb S’mores Protein Brownies hit that sweet spot between cozy dessert and smart nutrition.
They’re simple, flexible, and big on flavor. Keep a batch in the fridge for easy snacks, post-workout bites, or a weeknight treat. Tweak the sweetness, switch up the toppings, and make them your own—no campfire required.
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