Indulge in the classic flavor of red velvet cupcakes on Valentine's Day. With a food processor, you can easily mix the batter and achieve a moist and velvety texture. Combine flour, cocoa powder, sugar, baking powder, salt, buttermilk, eggs, vanilla extract, and red food coloring in the food processor. Blend until well combined and smooth. Fill cupcake liners with the batter and bake until a toothpick inserted comes out clean. Frost the cupcakes with cream cheese frosting and decorate with heart-shaped sprinkles for a festive touch.