Preheat the oven to 350 F. Line muffin pan with red cupcake liners.

In a medium bowl, whisk the flour, cocoa powder, baking soda, and salt. Set aside.

In a large bowl, beat the butter and sugar until light and fluffy.

Add the egg and vanilla and beat until combined.

Stir the vinegar and red food coloring into the buttermilk.

Add the flour mixture to the butter mixture, mixing on low speed. Add in the buttermilk and beat until smooth.

Pour the batter into prepared muffin, filling each cup halfway.

Bake the cupcakes for 15-18 minutes or until a toothpick inserted in the center comes out clean. Let the cupcakes cool for 5 minutes in the pan before transferring them to a wire rack to cool completely.

In a medium bowl, beat the butter until creamy. Add the cream cheese, vanilla, and salt and beat until combined.

Gradually add in the powdered sugar and beat until smooth.

Transfer the frosting to a piping bag fitted with a large star tip.

Pipe a swirl of frosting onto the top of each cupcake.

Press one red, one blue, and one white star candy or sprinkle into the frosting swirl.

Press two mini Oreos into the sides of the frosting swirl to make Mickey ears.