Ingredients
Cupcakes
- ¾ cup unsweetened cocoa powder (not Dutch)
- ⅔ cup boiling water
- 2 large eggs
- 1½ cups granulated sugar
- ⅓ cup vegetable oil
- 1 teaspoon pure vanilla extract
- ¼ teaspoon salt
- 1⅓ cups all-purpose flour, spooned and leveled
- ⅔ cup whole milk
- ¾ teaspoon baking powder
- ½ teaspoon baking soda
Frosing
- 2½ cups granulated sugar
- 6 large egg whites
- ¼ teaspoon pure vanilla extract
- ½ teaspoon cream of tartar
- Chocolate shavings and miniature marshmallows, for garnish
How to Make It
- Whisk the cocoa into the hot water until dissolved. Let cool.
- Beat the eggs and sugar with an electric mixer until light, 3 minutes. Whisk in the oil, vanilla, and salt. Whisk in the cocoa mixture.
- Whisk together the flour, milk, baking powder, and baking soda. Add to the egg mixture; mix to combine.
- Bake in 2 lined 12-cup muffin tins at 350°F for 15 to 20 minutes. Let cool.
- Whisk the sugar, egg whites, vanilla, and cream of tartar in a heatproof bowl over a saucepan with 1 inch of gently simmering water until the whites feel warm and the sugar dissolves, 2 minutes. Whip with an electric mixer with the whisk attachment until soft peaks form, 4 to 5 minutes.
- Dollop or pipe the frosting onto the cupcakes. Top with chocolate shavings and marshmallows.