Ingredients
Cupcakes:
- 3/4 cup (1 1/2 sticks) unsalted butter, cut into pieces
- 1/2 cup root beer, flat
- 1/3 cup unsweetened Dutch-processed cocoa
- 1 1/4 cups all-purpose flour
- 1 1/4 cups sugar
- 1/2 teaspoon baking powder
- 1/4 teaspoon baking soda
- 1/4 teaspoon fine salt
- 1/4 cup sour cream
- 2 large eggs, room temperature
- 1 teaspoon pure vanilla extract
Frosting:
- 8 large egg whites
- 1 1/2 cups granulated sugar
- 1/2 teaspoon cream of tartar
- 1 pinch fine salt
- 1 teaspoon banana extract, or more to taste
- 1 to 2 drops pastel food coloring, optional
- Candied eyeballs
- Equipment: 12 cup standard muffin tin
Description

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