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Peanut butter mug cake is moist, tender & ready in under 5 minutes.

Peanut Butter Mug Cake

This easy peanut butter mug cake is fudgy, moist, made in the microwave, and ready in under 5 minutes. Add in some chocolate chips or an extra drizzle of peanut butter on top for the most delicious mug cake recipe.
Course Dessert
Cuisine American
Keyword Mug Cake, Peanut Butter Mug Cake
Prep Time 2 minutes
Cook Time 1 minute
Total Time 5 minutes
Servings 1 mug cake


  • 1 ½ tablespoons oil
  • 2 tablespoons peanut butter
  • 2 tablespoons sugar
  • 1 large egg yolk or 1 extra tablespoon milk
  • 2 tablespoons flour
  • ¼ teaspoon baking powder
  • 2 tablespoons milk
  • 1 tablespoon chocolate chips


  • Add the oil, peanut butter, sugar & egg yolk to a large mug. Whisk together until smooth.
  • Whisk in the flour and baking powder.
  • Stir in the milk and optional chocolate chips
  • Microwave for 1 minute and 30 seconds or until the top looks set.
  • Let stand for 1-2 minutes to cool slightly, then top with ice cream or a drizzle of peanut butter.