For the Cookies:
- ½ cup unsalted butter, softened
- ½ cup granulated sugar
- ½ cup brown sugar, packed
- 1 large egg
- 1 teaspoon vanilla extract
- 1 tablespoon red food coloring
- 1 ½ cups all-purpose flour
- ¼ cup cocoa powder
- ½ teaspoon baking powder
- ¼ teaspoon baking soda
- ¼ teaspoon salt
- 1 teaspoon white vinegar
- ½ cup buttermilk
For the Cream Cheese Frosting:
- ½ cup unsalted butter, softened
- 8 ounces cream cheese, softened
- 3 cups powdered sugar
- 1 teaspoon vanilla extract