Chocolate Brownie Protein Bar (Low Calorie)

Here is a homemade chocolate brownie protein bar recipe that is low in sugar, cheap to make, and is only around 100 calories per slice!

This recipe shows how you can make a batch for the week ahead which is a great money-saving hack.

What Are Low Calorie Protein Bars?

Protein bars can be very convenient when you are looking for a healthy snack before or after the gym, or if you are looking for a chocolate bar alternative that is healthier.

Let’s face it, protein bars are expensive and can easily add to your monthly expenses if you’re not too careful. However, making them yourself is more budget-friendly.

With this recipe, you can make 14 chocolate brownie protein bars which you can keep stored in the fridge and eat on the go.

Or you could make 8 chocolate brownie bars which are more gooey, thicker and ideal for dessert.

Why you will love these chocolate brownie protein bar recipe?

  • Super cheap to make and a great way to save money buying protein bars.
  • Only 100 calories per protein bar and low sugar (when you divide them into 14+ servings).
  • Takes just 10 minutes to prep.
  • Alternative to drinking protein shakes or eating chocolate bars.

Recipe ingredients

The recipe list does look long but below are the key ingredients you actually need.

1) Protein Powder & Eggs

This recipe calls for PhD chocolate brownie protein powder which is perfect for protein recipes like chocolate brownies, protein mousse, and even protein chocolate ice cream! In fact, it comes with recipes and this recipe post is a slightly altered version that you can make at home. You can also drink it as a regular protein shake or test out other healthy recipes. This recipe also calls for eggs to help bind the ingredients. To substitute: You can use regular chocolate whey protein powder. However, it might not taste as good which is why this brownie flavored protein powder is better.

2) Bananas

As always, you cannot go wrong with mashed overripe bananas for these types of recipes which also helps prevent food wastage. Most protein recipes will look good on paper but taste horrible and bland. Using a sweetener helps and mashed bananas are a great alternative to regular granulated sugar. To substitute: This is the sweetener, but you can use fewer amounts of stevia or erythritol which can help reduce more calories in this recipe.

3) Nut Butter

Either peanut butter or almond butter is good for these protein bars as they add additional protein and healthy fats, as well as flavor.

4) Almond Milk

Or milk of your choice. This helps with the texture.

How To Make Chocolate Brownie Protein Bars (Photo Guide)

Mashed banans in a mixing bowl

Prep the mashed bananas. Perfect if you have leftover bananas.

All other ingredients in mixing bowl

Add the main ingredients to the mixing bowl. You have an opportunity to add more ingredients.

Example of the chocolate brownie protein powder which was used for this recipe

I used chocolate brownie protein powder for this recipe, however you can use regular whey chocolate protein powder.

Adding chocolate chips to the mixing bowl

I added plenty of chocolate chips!

Adding the chocolate brownie mixture to the baking tray

Here is what the chocolate brownie mixture should look like before you bake it in the oven.

How it looks after it has been cooked. Slicing the brownies into 14 bars.

You can make plenty of protein bars. As this is portion controlled, the calories are low.

Recipe Tips

Keep these stored in an air-tight container or freezer bag in the fridge for 7 days. It might keep well for longer but I would not know because they are usually all gone by then. I have kept these for more than a week, and they have been fine.

Recipe Questions

How To Make these protein bars vegan-friendly?

You will need to use a vegan chocolate flavor protein powder and use flax eggs instead of regular eggs.

Are these protein bars keto-friendly?

Each slice is 10.2 grams of carbohydrates with 1.8 grams of fiber. This will not do harm if you are on a keto diet but remember this is just one slice. You could use a calorie free sugar replacement to keep the carbohydrates low.

I do not have bananas, what else can I use?

The mashed bananas are used to sweeten the chocolate brownie bars and add flavor. You can another sweetener such as honey, maple syrup or a calorie-free sweetener like stevia.

Are chocolate brownie protein bars good for you?

These bars can be good for you in many ways. For example, if you are looking to lose weight, these bars are low in calories and carbohydrates which can be a good replacement for chocolate bars. These can also be good for you if you are regularly working out or going to the gym by providing you energy pre or post workout.


Side view of chocolate brownie protein bars

Chocolate Brownie Protein Bars (Low Calorie Recipe)

Learn how to make your own chocolate brownie protein bars in a large batch. Low in calories, low in sugar, cheap to make and healthy.
Prep Time 10 mins
Cook Time 25 mins
Course Snack
Cuisine American
Servings 14 protein bars
Calories 100 kcal


  • 60 g of PhD Smart Protein Chocolate Brownie
  • 80 g Peanut Butter
  • 3 Bananas mashed
  • 2 Eggs
  • 1 cup Almond Milk or milk alternative
  • 25 g Cocoa Powder
  • 2 tbsp Chocolate Chips
  • 1 tsp Vanilla Extract
  • 1 tsp Baking Powder
  • 1 Lemon juice and zest
  • 1/2 tsp Salt
  • 1 tsp Coconut Oil or alternative


  • To a mixing bowl, add the protein powder, cocoa powder, mashed bananas, peanut butter, eggs, vanilla extract, baking powder, lemon juice and salt. Stir vigorously and add almond milk as you go along.
  • Once it reaches a smooth texture, add the chocolate chips.
  • Line your baking tray with parchment paper and add coconut oil.
  • Add the chocolate brownie mixture to the baking tray.
  • Bake for 25 minutes on 200°c / 400°f.
  • Remove from oven and allow to stand for 5 minutes.
  • Slice into 14 protein bars (or 8 protein bars if you want them thicker).
  • Keep stored in an air-tight container and keep in fridge for a week.


  • Don't store this in-room temperature because they will go off quickly. Keep it stored in the fridge and air-tight container, and they will last for up to a week.


Serving: 1protein barCalories: 100kcalCarbohydrates: 10.2gProtein: 5.4gFat: 4.8gSaturated Fat: 1.5gPolyunsaturated Fat: 0.4gCholesterol: 27.3mgSodium: 195.3mgFiber: 1.8gSugar: 4.9g
Tried this recipe?Let us know how it was!

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