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Peanut Butter Cupcakes with Chocolate Buttercream


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  • Author: Isabella
  • Total Time: 52 minutes
  • Yield: 24 cupcakes
  • Diet: Vegetarian

Description

Soft and rich peanut butter cupcakes topped with a smooth, creamy chocolate buttercream for a bakery-style treat. Perfect for parties, birthdays, or any dessert spread.


Ingredients

1/2 cup unsalted butter, softened

2 cups brown sugar

1 cup peanut butter

2 eggs

1 1/2 cups milk

1 teaspoon vanilla extract

2 1/2 cups all-purpose flour

1 teaspoon baking soda

2 teaspoons cream of tartar

Pinch of salt

8 ounces unsweetened chocolate, chopped

2 cups unsalted butter, softened (for frosting)

4 cups powdered sugar

2 tablespoons milk, plus more as needed

2 teaspoons vanilla extract (for frosting)

1/4 teaspoon salt (for frosting)


Instructions

  1. Preheat oven to 350°F (175°C) and line 24 muffin cups with paper liners.
  2. In a large bowl, beat butter, brown sugar, and peanut butter until light and fluffy. Add eggs one at a time, then mix in vanilla.
  3. In a separate bowl, whisk together flour, baking soda, cream of tartar, and salt.
  4. Add dry ingredients to the wet mixture in stages, alternating with milk, mixing until just combined.
  5. Divide batter evenly among liners and bake for 20–22 minutes, until a toothpick inserted comes out clean. Cool completely.
  6. Melt chopped chocolate in short microwave bursts, stirring until smooth. Let cool to room temperature.
  7. In a bowl, beat butter, powdered sugar, milk, vanilla, and salt until creamy.
  8. Add melted chocolate and beat until smooth and fluffy. Adjust consistency with additional milk if needed.
  9. Frost cooled cupcakes and serve.

Notes

Add mini chocolate chips to the batter for extra flavor.

Top with peanut butter cups for decoration and added richness.

Use semisweet chocolate instead of unsweetened for a sweeter frosting.

Store in an airtight container at room temperature for 2 days or refrigerate for up to 5 days.

Let refrigerated cupcakes sit at room temperature before serving for best texture.

Freeze unfrosted cupcakes for up to 2 months; thaw before frosting.

  • Prep Time: 30 minutes
  • Cook Time: 22 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 cupcake
  • Calories: 456 kcal
  • Sugar: 38 g
  • Sodium: 220 mg
  • Fat: 28 g
  • Saturated Fat: 15 g
  • Unsaturated Fat: 11 g
  • Trans Fat: 0.5 g
  • Carbohydrates: 48 g
  • Fiber: 2 g
  • Protein: 6 g
  • Cholesterol: 75 mg