Ingredients
12 servings
- •1 ⅔ cups all-purpose flour
- •1 teaspoon baking powder
- •½ teaspoon baking soda
- •½ teaspoon salt
- •¾ cup firmly packed light brown sugar
- •5 tablespoons creamy natural peanut butter
- •2 tablespoons unsalted butter, softened
- •¾ cup mashed ripe bananas
- •2 large eggs
- •1 ½ teaspoons vanilla extract
- •½ cup milk
- •¾ cup marshmallow fluff
- •2 tablespoons unsalted butter, softened
- •2 tablespoons vegetable shortening
- •1 teaspoon vanilla extract
- •1 ½ cups confectioners' sugar, or as needed
- •2 tablespoons milk
Instructions
- Preheat oven to 350 degrees F (175 degrees C). Line 12 muffin cups with paper liners.
- Sift flour, baking powder, baking soda, and salt together in a bowl.
- Beat brown sugar, peanut butter, and 2 tablespoons butter together in a bowl using an electric mixer on medium speed until creamy, about 1 minute. Beat banana, eggs, and 1 1/2 teaspoons vanilla extract into creamed peanut butter mixture until incorporated, about 1 minute.
- Beat flour mixture, alternating with 1/2 cup milk, into creamed peanut butter mixture until batter is well combined; pour into muffin cups.
- Bake in the preheated oven until a toothpick inserted in the center of a cake comes out with moist crumbs, 20 to 23 minutes. Cool cupcakes in the tin for 15 minutes before transferring to a wire rack to cool completely.
- Beat marshmallow fluff, 2 tablespoons butter, shortening, and 1 teaspoon vanilla extract together in a bowl using an electric mixer until smooth. Gradually beat confectioners' sugar, alternating with 2 tablespoons milk, into marshmallow mixture until desired thickness is reached; chill in refrigerator until thickened, about 15 minutes.
- Spread frosting over cupcakes or pipe through a pastry bag.
Nutritional Facts
Per 12 servings
- Calories: 322
- Carbohydrate: 53g
- Fat: 11g
- Fiber: 1g
- Protein: 5g
- Sugar: 35g