Chocolate Mousse Protein Bars are a healthy and delicious snack to indulge with no guilt. Easy, no bake recipe with a high protein chocolate base, mousse and chocolate topping.

Who doesn’t love chocolate mousse? It’s rich, creamy, and decadent. But what if I told you that you could make a healthy version of chocolate mousse that’s also packed with protein? That’s right, these chocolate mousse protein bars are the perfect snack for anyone who wants to indulge without feeling guilty.

So go ahead and enjoy a few of these delicious bars—you won’t regret it!

Ingredients for Chocolate Mousse Protein Bar Recipe:

This chocolate mousse bar recipe is made with a few pantry staples and actually clean ingredients. A real guilt free treat with no sugar or butter added. Here’s what it takes:

The Chocolatey Base:

Chocolate Whey Protein Powder for healthy homemade protein bars that’s also sugar free
I used Dymatize Chocolate Whey ISO here.
Unsweetened Cocoa Powder
Oat Flour: You can make your own by blending oats in a high-speed blender
Coconut Flour
Unsweetened Applesauce
Unsweetened Almond Milk
A bit of Stevia Sweetener

The Chocolate Mousse Layer:

Chocolate Whey-casein Protein Powder: Quest Nutrition Chocolate here again.
Unflavored Protein Powder: I use the Multi-purpose mix protein powder from Quest Nutrition.
Almond Butter Powder, also known as Powdered Almond Butter. I use the one from PB2.
Chocolate flavor Almond Butter from American Dream Nut Butter.It’s lower fat and higher protein than normal, and just amazing (code HAYLSKITCHEN gives you a discount on these).
ADNB has other amazing flavors that would work well here too.
Sugar free Maple Syrup for low calorie protein bar with no sugar!
I use the sugar free monk fruit maple syrup from Lakanto (code HAYLSKITCHEN gets you a discount)
Unsweetened Almond Milk

For the Chocolate Topping for a Candy Bar effect:

Sugar Free Chocolate: I used the one from Lakanto here.
Code HAYLSKITCHEN gives you a discount here
A bit of Coconut Oil

Tips for No Bake Chocolate Mousse Bars with Protein Powder

This recipe for a sugar-free mars bar substitute with protein powder is a super easy no bake recipe; Here’s some tips to get it perfect.

Use whey-caesin and whey protein powder when specified. It works well with the ratio of ingredients in these healthy Mars bars.
Whey-caesin absorbs more liquid, and whey absorbs less, so you need to adjust the liquid accordingly.

For sweeter flavor, add more sweetener.

Mix dry ingredients before adding wet so you have a smoooth mix.

Add milk only a little at a time or the mixture will be too runny.
Freeze the mousse bars before cutting or they will stick to the knife.

Clean knife between each cut so you get a smooth slice.

Microwave the chocolate in intervals of 15 seconds – stirring at each round – so it doesn’t burn.

Let the melted chocolate cool a bit – for about 5 minutes – so that you don’t melt the bars!

To store No Cook Chocolate Mousse Bars

Store these no cook chocolate mousse bars in an airtight container in the fridge for 3-4 days, or on the countertop for a few hours.

For longer, place Mars protein bars in airtight sealed container, or individually wrapped in plastic wrap and placed in zipper bag; Freeze homemade chocolate mousse protein bars for 2 or 3 months. Be sure to let them thaw on the counter before eating!

Alternatives for Healthy Chocolate Mousse Bar Recipe:

If you don’t have all the ingredients I used, you can try these healthy Mars bars with some of these other alternatives:

Oat Flour: Use almond flour
Coconut Flour: About ½ – ⅔ cup Almond Flour
Almond Milk: Any other milk
Unsweetened Applesauce: Pumpkin Puree

For the mousse layer:

Almond Butter Powder: Peanut Butter Powder, or about 3 Tbsp Almond Butter or Peanut butter, but start with only ½ Tbsp of water at a time.
Chocolate Almond Butter: Nutella or other chocolate flavored nut butter.
Regular almond butter + 1 tsp extra cocoa powder + sweetener is also an option.
Unflavored Protein Powder: Try coconut flour or unflavored collagen
Maple Syrup: Honey might work here (or regular maple syrup instead of sugar-free). Simple syrup might be good here too.

For the topping:

Sugar-free Chocolate: Use regular chocolate

Vegan Chocolate Mousse Bars Recipe

These high-proten chocolate mousse bars can easily be made Vegan with a plant-based protein powder and dairy-free chocolate.

More Sugar free Homemade Chocolate Protein Bar Recipes: