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Protein Mug Cake

Close-up showing the fluffy sponge texture of the protein mug cake
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We’ve all been there. You just crushed a workout, your macros are looking good, but your sweet tooth is screaming for a treat. This isn’t your average rubbery microwave sponge. It’s a rich, flourless, and high-protein dessert that actually tastes like it came from a bakery. By using a whole egg instead of just water, we get a moist, cake-like texture that makes protein powder actually enjoyable.

Ingredients

  • Protein Powder: 1 scoop (Whey/Casein blend works best for texture)
  • Unsweetened Cocoa Powder: 2 tsp
  • Baking Powder: ½ tsp
  • Sweetener: 1-2 tsp (Stevia, Erythritol, or Maple Syrup)
  • Large Egg: 1
  • Water or Milk: 1-2 tbsp (added as needed)

Instructions

  1. Whisk the Dry Stuff: Grab a wide, microwave-safe mug. Toss in the protein powder, cocoa, baking powder, and sweetener. Use a fork to break up any stubborn clumps until you have a fine, even powder.
  2. Add the Binder: Crack the egg right into the mug. Whisk it vigorously with your fork. It’ll look like thick sludge at first—just keep going until it’s glossy and smooth like brownie batter.
  3. Adjust the Texture: Check your consistency. It should look like melted peanut butter. If it’s too stiff, add your water or milk one teaspoon at a time until it’s pourable but still thick.
  4. The Big Zap: Microwave on High for 30 seconds. Check the top; it should be mostly dry. If it’s still wet, add 5-10 more seconds. Warning: Every microwave is different. Don’t overcook it or it’ll turn into a rubber tire!
  5. Cool and Devour: Let it sit for a minute so you don’t burn your tongue. It’s best eaten warm!

Notes

Serving Suggestions

  • The Elite Topping: A dollop of Greek yogurt and a few fresh strawberries.
  • For the PB Lovers: Stir a spoonful of peanut butter into the center before cooking for a molten core.
  • Extra Crunch: Sprinkle some cacao nibs or crushed walnuts on top for texture.

Tips & Tricks

  • Mug Choice: Always use a wide soup-style mug. Tall, skinny mugs tend to cook unevenly, leaving you with a raw middle.
  • The Powder Factor: Vegan powders (pea/hemp) soak up way more liquid. Be ready to add an extra splash of milk to prevent dryness.
  • Check Early: Start checking at the 30-second mark to catch that perfect, moist crumb before it toughens up.

Storage & Reheating

  • Eat It Fast: These are “diva” cakes—they’re spectacular for about 10 minutes, then they start to get tough as they cool.
  • Saving for Later: If you must, wrap it tightly in plastic to keep the moisture in.
  • The Refresh: To reheat, sprinkle a few drops of water on top and microwave for 10 seconds to “wake up” the texture.

Find it online: https://recipesh.com/protein-mug-cake/