Protein Cake Bars

10 Bars104 cals

Keep the cake and the diet with these Protein Cake Bars! This easy homemade protein bar recipe is packed with great macros, made with common ingredients, and tastes just as good as they look! If you’re looking for some quick baked protein bars then this is the recipe for you.

For this one you’ll need a bowl for your dry ingredients, a bowl for your wet ingredients, and something to bake your bars in.

Now the first thing you need to do is to turn 1 1/4 cups of rolled oats into oat flour. To make your own homemade oat flour simply just blend or process your oats until they look like flour! Easy, right?

Add into the bowl for your dry ingredients 2 scoops of a vanilla or other complimenting flavored protein powder, your oat flour, 3 tablespoons of cocoa powder, 1/4 cup of your choice sweetener, 1/2 teaspoon of baking soda, 1/4 teaspoon of salt, and 3 tablespoons of optional chocolate chips.

If you don’t have vanilla you can use banana, peanut butter, chocolate, and so on! As long as your powder flavor compliments the chocolate flavor in these protein cake bars you’ll be good.

Cake Bar Flavors

If you don’t like chocolate chips you could add in something else like crushed up nuts, fruit, peanut butter chips, and so on. Think outside the box and you’ll have endless options!

Add into the bowl for your wet ingredients 1/4 cup of unsweetened milk substitute, 1 large whole egg, 2 large egg whites, 1/3 cup of unsweetened apple sauce, and 1/4 cup of plain Greek yogurt.

Mix all of your wet ingredients together until smooth. I like using a hand mixer to do this but a whisk or even a spoon will work just as good with some effort.

Once your wet ingredients are smooth you’ll want to slowly add them to your dry ingredients while mix everything together.

Take out a cake pan, coat it with some non-stick cooking spray, and pour your mix in. The size of your cake pan will be dependent on what size protein cake bars you want. If you want smaller bars but thicker bars then use a smaller pan.

Put your bars into the oven on 350F/176C for 20-25 minutes or until a toothpick inserted into the center of them comes out clean. Remember that the size pan you’re using can change your baking time so keep an eye on it!

Remove your protein cake bars, let them cool, and devour.

Pro tip? Top these with some whipped cream as you eat them.

Level these up even more by topping them with one of our Protein Frosting Recipes!

Protein Cake Bars Recipe

Protein Cake Bars

Beat your cravings and save money with these diet friendly homemade Protein Cake Bars! This protein bar recipe is quick, easy, and delicious.
5 from 3 votes
Print Pin Rate Save Recipe
Prep Time: 5 minutes
Cook Time: 25 minutes
Total Time: 30 minutes
Course: Dessert
Cuisine: American
Keyword: cake, chocolate, healthy, protein bars
Servings: 10 Bars
Calories: 104kcal
Cost: $2.40

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  • 1 ¼ Cup Rolled Oats
  • 2 Scoops Protein Powder - I like Chocolate
  • ¼ Teaspoon Salt
  • 1 Large Whole Egg
  • 2 Large Egg Whites
  • ¼ Cup Sweetener
  • ½ Teaspoon Baking Soda
  • 3 Tablespoons Cocoa Powder
  • 2 Ounces Milk Substitute - or Milk
  • Cup Unsweetened Apple Sauce
  • ¼ Cup Greek Yogurt - Plain
  • 3 Tablespoons Chocolate Chips


  • Blend or process your Rolled Oats until they look like flour
  • Add and mix your dry ingredients together in a bowl
  • Add and mix your wet ingredients together in another bowl
  • Slowly combine your wet ingredients into your dry ingredients
  • Take out a baking dish or pan and coat it with some non-stick cooking spray
  • Pour your mix in
  • Top with whatever you want
  • Bake it on 350F/176C for 20-25 minutes



Calories in the WHOLE recipe:
  • Calories: 1038
  • Fat: 26g
  • Saturated Fat: 11g
  • Sodium: 1038mg
  • Carbs: 119g
  • Fiber: 20g
  • Sugar: 33g
  • Protein: 82g


Calories: 104kcal | Carbohydrates: 11.9g | Protein: 8.2g | Fat: 2.6g | Saturated Fat: 1.1g | Sodium: 103.8mg | Fiber: 2g | Sugar: 3.3g


  1. aretouli on March 21, 2021 at 5:02 am

    5 stars
    Thank you for this recipe, so nice to have found you! Greetings from Greece.

  2. Mindy on February 25, 2018 at 12:00 am

    These are fantastic! Thank you for sharing!

  3. Chris Dudenbostel on December 4, 2014 at 12:00 am

    Derek, your recipes are seriously the bomb! You’re the man! There isn’t a day I don’t find myself browsing your recipes for new healthy ideas!

    • Derek Howes on December 7, 2014 at 12:00 am

      Thanks Chris! Appreciate that

  4. Mayank on September 18, 2014 at 12:00 am

    These turned out to be delicious! I swapped the vanilla protein powder with chocolate flavored protein powder and the chocolaty element was even more pronounced.

    I love them. Thanks for the wonderful recipe.

  5. Mike T. on April 9, 2014 at 12:00 am

    Another Great recipe! If you love chocolate you will love these. I’ve made these several times now. They go great with breakfast or as a snack throughout the day. I recommend storing them in the refrigerator if you plan on eating them throughout the week. The first time I made them they started to smell after about 4 days in the pantry.

  6. Drew on July 14, 2013 at 12:00 am

    These cake bars are delicious. I like them better than the black bean brownies (those were pretty good too) but the only problem is that they are too good so I end up having like 3-4 right out of the oven on the first night. Luckily I’ll be switching from cutting to bulking soon so this will no longer be a bad thing. Keep em coming dude!

    • Derek Howes on July 16, 2013 at 12:00 am

      Thanks Drew! Love the feedback.

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