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3-Ingredient Chocolate Mug Cake

This 3-Ingredient Chocolate Mug Cake is the ultimate quick dessert when you're craving something sweet. Made with just egg, powdered sugar, and cocoa powder, this flourless chocolate cake comes together in one mug and cooks in the microwave in about 90 seconds. It's rich, moist, chocolatey, and perfect for a single serving.
Prep Time3 minutes
Active Time2 minutes
1 minute
Total Time6 minutes
Course: Dessert
Cuisine: American
Keyword: 3-Ingredient Chocolate Mug Cake, Double Chocolate Mug Cake Recipe, Easy Mug Cake Recipe, Microwave Mug Cake
Yield: 2 People
Author: Emily Carter

Equipment

  • Microwave-safe mug (10–12 oz)
  • Fork or small whisk
  • Measuring cup
  • Measuring spoons
  • Microwave

Materials

  • 1 large egg
  • ΒΌ cup powdered sugar
  • 2 tablespoons unsweetened cocoa powder

Instructions

  • Crack the egg into a large microwave-safe mug.
  • Beat the egg until the yolk and white are fully combined.
  • Add the powdered sugar and cocoa powder.
  • Stir until the batter is smooth and free of lumps.
  • Microwave on High for 1 minute 30 seconds (adjust slightly for your microwave if needed).
  • Let the cake rest for 1 minute before serving.
  • Enjoy warm directly from the mug, or add your favorite toppings.

Notes

  • Use a mug that holds at least 10–12 ounces to prevent overflow.
  • Every microwave is different, so cooking times may vary by 10–20 seconds.
  • Avoid overcooking, as it can make the cake rubbery.
  • Mix the batter thoroughly for the smoothest texture.
  • For the richest chocolate flavor, use high-quality unsweetened cocoa powder.
  • Calories: 285 kcal
  • Carbohydrates: 48 g
  • Protein: 8 g
  • Fat: 7 g
  • Saturated Fat: 2 g
  • Cholesterol: 186 mg
  • Sodium: 72 mg
  • Potassium: 180 mg
  • Fiber: 3 g
  • Sugar: 43 g
  • Calcium: 35 mg
  • Iron: 2 mg