Chocolate Cupcakes with Vanilla Buttercream Frosting Recipe

  • Yield:

    26 to 28 cupcakes

  • Total Time:

    1 hr

  • Prep Time:

    40 mins

  • Cook Time:

    20 mins


  • 1 cup water
  • 1/2 cup cocoa powder
  • 1/2 cup dark chocolate chips
  • 2 cups all-purpose flour
  • 2 cups sugar
  • 1-1/2 teaspoons baking powder
  • 1 teaspoon salt
  • 1 cup buttermilk
  • 2/3 cup Mazola® Corn Oil
  • 2 eggs
  • 2 teaspoons pure vanilla extract
  • Vanilla Buttercream Frosting
  • 1-1/2 cups butter OR margarine, softened
  • 1/4 cup plus 2 tablespoons corn syrup, light
  • 2 tablespoons pure vanilla extract
  • 1/4 teaspoon salt
  • 9 cups powdered sugar
  • 1/3 to 1/2 cup milk
  • Optional, food coloring


  1. Step 1) Preheat oven to 350°F. Grease 26 to 28 muffin cups (2-1/2 inch) or line with paper liners.
  2. Step 2) Combine water and cocoa powder in a small saucepan over medium-low heat. Stir until smooth and bring to a boil. Remove from heat and stir in chocolate chips until melted. Set aside to cool.
  3. Step 3) Whisk together flour, sugar, baking powder and salt in a large mixer bowl. Add buttermilk, oil, eggs and vanilla and mix for 1 to 2 minutes on medium speed until smooth. Add melted chocolate mixture and continue mixing for 1 minute or until well blended.
  4. Step 4) Portion batter evenly into prepared baking cups filling each approximately two-thirds full. Bake for 18 to 20 minutes or until a wooden pick inserted in the center comes out clean. Remove from oven. Remove cupcakes from pans and allow to cool completely on wire racks before frosting.
  5. Step 5) For frosting: Beat butter, corn syrup, vanilla and salt in a large mixing bowl until light and creamy. Gradually add powdered sugar and 1/3 cup milk until fluffy, adding additional milk as needed to reach desired spreading consistency. Tint with food coloring, if desired. Pipe frosting generously onto cupcakes with a pastry bag and decorative tip. Note: If spreading frosting on cakes with a knife (instead of piping), use a half recipe of the frosting.