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90-Second High Protein Chocolate Peanut Butter Mug Cake

Close-up of a rich, dark chocolate protein mug cake topped with melted peanut butter.

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Make a single-serve, high-protein dessert in 90 seconds using only five basic ingredients.

Ingredients

Scale
  • 1 scoop vanilla or chocolate protein powder (about 30g)
  • 2 tablespoons oat flour
  • 1 tablespoon unsweetened cocoa powder
  • 1/4 teaspoon baking powder
  • 3 tablespoons milk (dairy or non-dairy)
  • 1 tablespoon peanut butter (optional, for topping)

Instructions

  1. Combine the protein powder, oat flour, cocoa powder, and baking powder in a microwave-safe mug. Mix the dry ingredients well.
  2. Add the milk to the dry mixture. Stir until just combined; do not overmix. The batter should be thick.
  3. Microwave on high for 60 to 90 seconds. Cooking time varies by microwave power. Check after 60 seconds.
  4. If the top looks wet, microwave for another 10 to 15 seconds.
  5. Top with peanut butter, if using, and serve immediately.

Notes

  • For a chocolate flavor, use chocolate protein powder. For a vanilla base, add 1/2 teaspoon of instant coffee granules for a mocha flavor.
  • Adjust milk slightly if the batter seems too dry or too wet. You want a thick, brownie-like consistency.
  • If you do not have oat flour, blend rolled oats until they reach a fine flour consistency.

Nutrition