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Chocolate protein mug cake topped with whipped cream and chopped nuts in a ceramic mug on a wooden table.

Protein Mug Cake Quick Healthy Dessert in 2 Minutes - Easy, Fast, and Satisfying

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Prep Time 2 minutes
Cook Time 2 minutes
Total Time 4 minutes
Course Breakfast, Dessert, Snack
Cuisine American, Modern Healthy Baking
Servings 1 Mug Cake

Ingredients
  

  • 3 tablespoons oat flour (or almond flour; see notes in Alternatives)
  • 1 scoop (about 25–30 g) vanilla or chocolate protein powder (whey, casein, or plant-based)
  • 1/2 teaspoon baking powder
  • 1 tablespoon cocoa powder (optional if using chocolate protein; skip if using vanilla and want a blondie vibe)
  • 1–2 teaspoons granulated sweetener (sugar, coconut sugar, or zero-calorie sweetener)
  • Pinch of salt
  • 1 large egg (or 3 tablespoons liquid egg whites)
  • 3 tablespoons milk (dairy or unsweetened almond/soy/oat milk)
  • 1 teaspoon neutral oil or melted butter (or 1 tablespoon Greek yogurt for extra moisture)
  • 1/2 teaspoon vanilla extract (if using vanilla or unflavored protein)
  • 1 tablespoon chocolate chips or berries (optional mix-in)

Instructions
 

  • Choose the right mug: Use a microwave-safe mug that holds at least 12 ounces. This prevents overflow and allows the cake to rise properly.
  • Mix dry ingredients: Add oat flour, protein powder, baking powder, cocoa powder (if using), sweetener, and a pinch of salt to the mug. Stir well to break up any clumps.
  • Add wet ingredients: Crack in the egg, pour in the milk, add oil or yogurt, and vanilla. Stir until the batter is smooth. Scrape the bottom and sides so no dry pockets remain.
  • Fold in extras: If using chocolate chips or berries, gently fold them into the batter. Don’t overmix.
  • Microwave: Cook on high for 45–60 seconds, then check the center. If it’s still wet on top, microwave in 10–15 second bursts until the top is just set. Total time is usually 60–90 seconds, depending on your microwave.
  • Rest and enjoy: Let the mug cake sit for 30–60 seconds. This helps it finish cooking and stay moist. Eat warm as is, or top with a spoonful of Greek yogurt, a drizzle of nut butter, or a few extra berries.