This amount of frosting is enough for me to frost exactly 12 cupcakes, but I don't use a lot of frosting for each cupcake (as you can see in the photos above). If you want more frosting, multiply the frosting recipe by 1.5.
Divide batter evenly between the cups, filling them about 3/4 full. Bake for 15-20 minutes, until a toothpick inserted into the center comes out clean or with just a few moist crumbs. Allow cupcakes to cool in pan for 10 minutes, then remove from pan and allow to cool completely on a wire rack.