Classic Red Velvet Cupcakes - healthy life

Name: Classic Red Velvet Cupcakes - healthy life
Cuisine: American
Ingredients: 1 1/4 cups all-purpose flour; 1/2 cup granulated sugar; 1/2 teaspoon baking soda; 1/2 teaspoon salt; 1 tablespoon cocoa powder; 3/4 cups butter, melted (1 1/2 sticks); 1/2 cup buttermilk; 1 egg; 1 tablespoon red food coloring; 1/2 teaspoon white vinegar; 1 teaspoon vanilla extract; 1 cup butter, softened; 8 oz cream cheese, softened; 4 1/2 cups powdered sugar; 2 teaspoons vanilla extract