Print

Peanut Butter Mug Cake

Print Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

This peanut butter mug cake is a quick, single-serve dessert made with just a few ingredients in minutes. It’s soft, fluffy, and packed with rich peanut butter flavor, perfect for satisfying sudden cravings.

  • Author: Sophia
  • Prep Time: 2 minutes
  • Cook Time: 1 minute (microwave) or 8–10 minutes (oven)
  • Total Time: 5–7 minutes
  • Yield: 1 mug cake
  • Category: Dessert
  • Method: Microwave
  • Cuisine: American
  • Diet: Gluten Free

Ingredients

  • 3 tablespoons smooth peanut butter
  • 1 to 2 tablespoons granulated sugar
  • 1 large egg
  • 1/2 teaspoon baking powder (optional)

Instructions

  1. In a small bowl, combine the peanut butter, sugar, egg, and baking powder (if using). Stir until smooth and well mixed.
  2. Lightly grease a microwave-safe mug or ramekin (6 oz or larger) and pour in the batter.
  3. Microwave on high for 45 seconds. Check doneness with a toothpick. If needed, microwave in 10-second intervals until set.
  4. Let the mug cake rest for 1 minute before serving to allow the texture to settle.
  5. Oven Option: Preheat oven to 180°C (350°F), grease a small ramekin, pour in the batter, and bake for 8–10 minutes until a toothpick inserted comes out clean.

Notes

  • Use smooth, runny peanut butter for the best texture.
  • Microwave times may vary — always check in intervals to avoid overcooking.
  • Baking powder is optional but adds fluffiness.
  • Best enjoyed fresh but can be stored for one day if needed.
  • Customize with chocolate chips, cinnamon, or alternative nut butters.

Nutrition

Find it online: https://savorymomskitchen.com/peanut-butter-mug-cake/