Peanut Butter Mug Cake
This microwave Peanut Butter Mug Cake is rich, gooey, and ready in just minutes, no oven needed! It's a quick and satisfying single-serve dessert for peanut butter lovers. I love that I can satisfy a sweet craving without baking a whole cake!
Servings: 1 individual mug cake
Calories: 722kcal
Ingredients
- 3 tablespoons creamy peanut butter
- 1 tablespoon unsalted butter
- 2 tablespoons light brown sugar, packed
- 1 large egg yolk, lightly beaten
- 1 tablespoon whole milk
- ½ teaspoon pure vanilla extract
- 3 tablespoons all-purpose flour
- ¼ teaspoon baking powder
- 1 pinch kosher salt
- 1 tablespoon mini chocolate chips, plus more for topping (optional)
Instructions
- Lightly coat the inside of an 8-ounce microwave-safe mug with nonstick cooking spray. Set aside.
- In a small microwave-safe bowl, combine peanut butter and unsalted butter. Microwave for about 15–20 seconds, just until softened, but not bubbling. Stir together until completely smooth.
- Add light brown sugar to the warm peanut butter mixture and stir until combined.
- Add lightly beaten egg yolk, milk, and vanilla. Stir until the mixture is fully smooth and combined.
- Add flour, baking powder, and salt. Stir gently until no dry spots remain; do not overmix.
- Fold in mini chocolate chips.
- Spoon the batter into the prepared microwave-safe mug. If desired, sprinkle a few extra chocolate chips on top.
- Microwave on high for 40 to 55 seconds, depending on your microwave's strength. The top should look just set but still slightly glossy in the center. Start checking at 40 seconds to avoid overcooking, as the cake can dry out quickly.
- Let the mug cake cool for about 2 minutes before serving.
- Enjoy warm, straight from the mug.
Nutrition
Serving: 1mug cake | Calories: 722kcal