Ingredients
Equipment
Method
- Whisk together flour, cocoa powder, sugar, baking soda, baking powder, and salt.
- Whisk egg, buttermilk, oil, and vanilla; combine with dry ingredients.
- Stir in hot coffee until smooth; batter will be thin.
- Divide into lined muffin cups, filling two thirds full.
- Bake at 350°F for 18 to 20 minutes until a toothpick comes out clean.
- Cool completely, at least 20 minutes, before frosting.
- Beat butter, cocoa, powdered sugar, milk, vanilla, and salt into a fluffy frosting.
- Frost the cooled cupcakes and serve.
Let the cupcakes cool completely on a wire rack before frosting; even slightly warm cupcakes will cause the frosting to melt and slide off.
Notes
- The batter will look thin after adding the hot coffee; this is normal and produces a moister crumb.
- Do not overmix the batter, or the cupcakes will turn out dense instead of tender.
- Use room temperature butter for a smoother, fluffier frosting.
- A standard 12 cup muffin tin keeps every cupcake a consistent size for even baking.
