Birthday Cake Protein Blondies
Sarah Wilkins
Sarah Wilkins
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96 Calories
7 g Carbs
11 g Protein
3 g Fat
Total Time
8 servings

These blondies have a dense, soft crumb cake and thick, creamy frosting—oh, and they taste just like real birthday cake packed full of sugar, vanilla, and sprinkles! It's actually hard to believe they're low in fat, carbs, and sugar and packed with protein. Careful, these won't last long!

Cake Ingredients

  • 40 g vanilla whey protein powder
  • ½ cup powdered Stevia
  • ⅛ tsp baking soda
  • ⅓ cup nonfat plain Greek yogurt
  • 2 tbsp cashew butter
  • ¼ cup egg whites
  • ½ tsp vanilla extract
  • 1 dash table salt
  • 1 tsp cake sprinkles

Frosting Ingredients

  • ½ cup fat-free cream cheese
  • 25 g vanilla whey protein powder
  • 2 tbsp powdered Stevia

Optional topping Ingredients

  • 1 tsp cake sprinkles


  1. Preheat oven to 350 degrees F.
  2. Whisk together dry ingredients in a medium mixing bowl.
  3. Mix in wet ingredients. Batter will be thick!
  4. Gently stir in sprinkles. Don't stir too much or the colors will bleed into the batter.
  5. Scoop batter into a 7x5 baking dish lightly coated with cooking spray.
  6. Bake for 15-20 minutes until center is set but an inserted toothpick comes out slightly dirty.
  7. While blondies cool, combine frosting ingredients. Frosting will seem thick at first, but keep working it until creamy.
  8. Spread over blondies and add sprinkles if desired. Store in the fridge until ready to eat.