THE BEST High Protein Chocolate Mousse

This High Protein Chocolate Mousse tastes just like a classic chocolate mousse – but it’s healthy and packs 15g of protein per serving! It’s the perfect dessert to meal prep for the week if you’re after something high in protein and truly delicious.

I was on the hunt for a high-protein chocolate mousse recipe the other day, and honestly, I wasn’t impressed with what I found. Most recipes were made with yogurt and chocolate protein powder. And while those can be tasty, they just don’t feel like a real chocolate mousse to me.

I wanted a proper, fluffy chocolate mousse, just with more protein. So I created and tested my own version using melted dark chocolate, chocolate protein powder and whipped egg whites to get that light, airy texture you expect from a classic mousse.

The result is a rich and chocolatey mousse with around 15g of protein per serving, without relying on cottage cheese, yogurt or whipped cream for its texture. It’s also incredibly simple to make, with just four main ingredients and about 15 minutes of hands-on prep. The hardest part is waiting for it to set!

If you’re looking for easy high-protein dessert recipes that actually feel like dessert, this one is definitely worth trying.

Why You’ll Love This High Protein Chocolate Mousse:

• It actually tastes like chocolate mousse: Rich, chocolatey and light, rather than thick and pudding-like.
• It’s high in protein: Each serving contains around 15g of protein, making it a satisfying option when you want a protein-rich dessert.
• Just four main ingredients: You only need dark chocolate, chocolate whey protein powder, milk or water and pasteurized egg whites.
• Quick to prepare: The mousse takes around 15 minutes to prepare. You just need to give it time to chill and set before serving.
• Light and fluffy: Whipped egg whites give the mousse its airy texture without needing whipped cream.
• Easy to make ahead: Portion it into jars or ramekins and keep it in the fridge for an easy dessert whenever a chocolate craving hits.
• Naturally gluten-free: There are no gluten-containing ingredients in the recipe.
• Easy to customize: Try adding chocolate chips, chocolate peanut butter or a drizzle of maple syrup for a different flavor.

What Makes This Protein Chocolate Mousse Healthy?

This chocolate mousse is a little different from a traditional mousse, as it gets its protein and structure from simple ingredients rather than heavy cream or large amounts of added sugar.

High in protein: Each serving contains around 15g of protein, thanks to the combination of whey protein powder and pasteurized egg whites.

Simple ingredients: There are just four main ingredients in the recipe, with no complicated ingredients or specialist equipment required.

No heavy cream: Instead of using whipped cream to create the mousse, whipped egg whites give this recipe its light and airy texture.

Naturally gluten-free: All of the ingredients used in the recipe are naturally gluten-free, making this a great option for anyone avoiding gluten.

Easy to adapt: You can use dairy-free chocolate, plant-based milk or a suitable dairy-free protein powder if needed. Just keep in mind that changing the protein powder can affect the texture and flavor.

Ingredients Needed:

These are the four main ingredients you’ll need to make this High Protein Chocolate Mousse. You’ll find the exact measurements in the recipe card at the bottom of the page.

Dark Chocolate: This gives the mousse its rich, intense chocolate flavor and helps it set as it chills. I recommend using dark chocolate for the best balance of sweetness and chocolate flavor.

Chocolate Protein Powder: This adds protein, chocolate flavor, and sweetness to the mousse. I developed and tested this recipe using USN Chocolate Bluelab Whey Protein, and I have also tested it successfully with Optimum Nutrition Chocolate Protein. If you’re using one of these protein powders, you can follow the recipe as written.

Milk or Water: This is mixed with the protein powder to create a smooth chocolate mixture. I usually use milk for a slightly creamier result, but water also works if you want to keep the mousse lighter.

Pasteurized Egg Whites: Whipped egg whites are what give this mousse its light, airy texture. They also add extra protein without making the mousse heavy or dense. Because the egg whites aren’t cooked, I recommend using pasteurized egg whites for this recipe.

Ingredient Substitutions:

Dark Chocolate: You can use a different type of chocolate if you prefer, but keep in mind that this will change the sweetness and flavor of the mousse. I recommend dark chocolate for the best balance of rich chocolate flavor and sweetness.

Chocolate Protein Powder: If you can’t find the protein powders I used, look for a chocolate whey protein powder with a similar protein content and serving size. Different protein powders can vary in sweetness and how much liquid they absorb, so the texture may be slightly different. I haven’t tested other brands, so I can’t guarantee the same result with an untested protein powder.

Milk or Water: You can use dairy milk or your favorite plant-based milk, such as almond, soy, or oat milk. Water also works and gives the mousse a slightly lighter texture.

Egg Whites: The whipped egg whites are important for creating the light, airy texture of this mousse, so I don’t recommend replacing them with whole eggs. If you need an egg-free option, whipped aquafaba may work, but I have not tested this substitution and the texture will be different.

Please note: Substitutions may affect the flavor, sweetness, and texture of the finished mousse. For the most reliable results, I recommend following the original recipe.

Why Egg Whites Instead of Cottage Cheese or Yogurt?

You’ll find plenty of high-protein mousse recipes made with Greek yogurt or cottage cheese, and they can be delicious too. The main difference with this recipe is the texture.

Egg whites: Whipping the egg whites incorporates air into the mixture, giving this mousse its light, fluffy texture. They also contribute protein while keeping the mousse light and airy.

Greek yogurt: Yogurt creates a thicker, creamier texture and adds protein, but it doesn’t give the mousse the same airy consistency as whipped egg whites.

Cottage cheese: Blended cottage cheese can also be used to make a high-protein mousse, but it creates a thicker, denser texture. It can be a great option if you prefer a more pudding-like or cheesecake-style dessert.

I chose whipped egg whites for this recipe because I wanted a mousse that felt as close as possible to a classic chocolate mousse: light, fluffy, and airy, while still providing around 15g of protein per serving.

Equipment Needed:

• Mixing bowls: One for combining your base, another for whipping the egg whites.
• Electric Hand Mixer: Essential for whipping egg whites to stiff peaks. You can use a stand mixer if you have one.
• Rubber spatula: For gently folding the egg whites into the chocolate mixture without deflating them.
• Microwave-safe bowl or double boiler: For melting the chocolate until silky smooth.
• Measuring cups and spoons: To make sure your ingredients are perfectly portioned.
• Serving jars or ramekins: For portioning the mousse once it’s ready to chill.

How to Make This Chocolate Protein Mousse:

Here is a detailed summary of how to make this recipe. I’ve also included some photos, and you can find the recipe video in the recipe card. At the bottom of this page is a summarized version that can be printed.

Step One:
Break the dark chocolate into pieces and melt it gently using a double boiler or in the microwave in 30-second bursts, stirring in between until smooth. Let it cool slightly so it doesn’t cook the egg whites later.

Step Two:
In a separate bowl, whisk the chocolate protein powder and milk (or water) until you get a smooth, lump-free, glossy mixture.

Step Three:
Stir the cooled melted chocolate into the protein mixture until it’s fully combined.

Step Four:
In a clean, dry bowl, whip the pasteurized egg whites to stiff peaks using an electric whisk or stand mixer.

Step Five:
Gently fold the whipped egg whites into the chocolate mixture in 2-3 additions. Use a rubber spatula and fold slowly until just combined, being careful not to knock out too much air. This is what keeps the mousse light and fluffy.

Step Six:
Divide the mousse evenly between 4 ramekins or jars. Refrigerate for at least 1 hour, or until the mousse is fully set.

Step Seven:
Once set, serve the mousse chilled. For the best texture, let it sit at room temperature for 5-10 minutes before serving. Enjoy it on its own or top with crushed nuts, cacao nibs, chocolate chips, or a drizzle of melted dark chocolate.

Tips and Notes:

• Use pasteurized egg whites: Since the egg whites aren’t cooked in this recipe, I recommend using pasteurized egg whites for food safety.
• Let the chocolate cool slightly: Don’t add very hot melted chocolate to the other ingredients. Let it cool for a few minutes first.
• Whip the egg whites properly: Use a clean, dry bowl and whip the egg whites until they form stiff peaks. This is what gives the mousse its light and fluffy texture.
• Fold gently: Add the whipped egg whites in batches and fold gently with a spatula. Avoid stirring vigorously, as this will knock out the air and make the mousse denser.
• Don’t skip the chilling time: The mousse needs at least 1 hour in the refrigerator to fully set and develop the right texture.
• Choose a protein powder you enjoy: The flavor and sweetness of your protein powder will come through in the finished mousse, so use one that tastes good on its own.

Flavor Variations

Want to change up your chocolate mousse? Here are a few easy variations to try:

Chocolate Peanut Butter: Add a spoonful of smooth peanut butter to the chocolate mixture for a rich chocolate peanut butter flavor. You can also swirl extra peanut butter over the top before serving.

Vanilla Protein Powder: You can use vanilla protein powder instead of chocolate protein powder if that’s what you have on hand. The mousse will have a milder chocolate flavor with a subtle vanilla taste.

Chocolate Chips: Gently fold a small handful of chocolate chips into the mousse before dividing it between your jars or ramekins for extra chocolate in every bite.

Maple Syrup: If you’re using an unsweetened protein powder, add maple syrup to taste for extra sweetness. Start with a small amount and adjust depending on the sweetness of your protein powder and chocolate.

How to Store Protein Chocolate Mousse:

Refrigeration: Store the mousse in airtight containers or covered jars in the refrigerator for 3-4 days. Keep it chilled until you’re ready to serve.

Serving: For the best texture, let the mousse sit at room temperature for 5-10 minutes before serving.

Freezing: I have not tested freezing this recipe, so I don’t recommend freezing it. The texture of the mousse may change once frozen and thawed.

Frequently Asked Questions

Can I make this without protein powder?

Yes, but the protein content will be much lower. I haven’t tested this recipe without protein powder, so I don’t recommend simply swapping it for cocoa powder. The protein powder also contributes to the flavor and texture of the mousse.

Can I use vanilla protein powder?

Yes! You can use vanilla protein powder instead of chocolate protein powder. The mousse will have a milder chocolate flavor with a subtle vanilla taste. Keep in mind that different protein powders vary in sweetness and texture, so the final result may be slightly different.

Can I eat this chocolate mousse right away?

You can, but I recommend chilling it for at least 1 hour. The mousse needs time to set, and the texture becomes much lighter and more mousse-like after chilling.

How long does protein chocolate mousse last in the fridge?

Store the mousse in airtight containers or covered jars in the refrigerator for 3-4 days. For the best texture, let it sit at room temperature for 5-10 minutes before serving.

Is it safe to eat raw egg whites?

Because the egg whites aren’t cooked in this recipe, I recommend using pasteurized egg whites. Pasteurization reduces the risk associated with consuming raw egg whites while still allowing you to whip them into the light, airy texture needed for the mousse.

More High Protein Dessert Recipes

If you’re looking for more easy, protein-rich treats, here are a few more dessert recipes to try:

4-Ingredient Protein Scones (Without Butter)

The BEST Birthday Cake Protein Bars (just 3 ingredients!)

The Best Brownie Protein Bars (Nut-Free Recipe)

The Best Protein Twix Bars

Easy and Healthy Protein Cheesecakes

Hey! If you make this recipe, I would love it if you could leave me some feedback and a rating ⭐⭐⭐⭐⭐ in the comment section at the bottom of the page! Also let me know on Tiktok, Facebook, Instagram or Pinterest! I can’t wait to hear your thoughts and see your photos!

Let me know in the comments below if you make this Protein Chocolate Mousse!