Ingredients
Method
Step-by-Step
- Heat the oven to 350°F (177°C) and line a 12-cup muffin pan with paper liners.
- Whisk the flour, natural cocoa powder, baking soda, and salt together in a medium bowl.
- Beat the softened butter and granulated sugar for about 2–3 minutes, until light and fluffy.
- Beat in the egg, vanilla extract, and red gel food coloring until evenly combined.
- Add the dry mixture in two or three additions, alternating with the buttermilk. Mix only until the batter comes together.
- Stir in the distilled white vinegar at the end, taking care not to overmix.
- Divide the batter among the liners, filling each about two-thirds full.
- Bake for 18–20 minutes, until the tops spring back lightly and a toothpick inserted in the center comes out with a few moist crumbs.
- Cool the cupcakes in the pan for about 5 minutes, then transfer them to a rack and cool completely.
- Beat the cream cheese and butter until smooth. Add the confectioners’ sugar, vanilla, and optional salt, then beat until creamy and spreadable.
- Frost the cupcakes only after they are fully cool.
Notes
Use room-temperature dairy ingredients for the smoothest batter and frosting. Natural cocoa powder works with the buttermilk and vinegar in this classic style, while gel coloring provides a deep red shade without adding excess liquid. Store frosted cupcakes in the refrigerator because of the cream-cheese frosting.
