Combine all cupcake ingredients in a large mixing bowl and beat with a mixer until well blended. Turn mixer on high and beat for 3 more minutes. Line a muffin pan with 24 paper muffin cups. Fill each cup about 3/4 full with the cupcake mix. Cook in preheated 350 degree oven for 20 minutes or until a toothpick inserted into the cupcake comes out clean. Allow to cool before removing from pan. To make the frosting, combine all frosting ingredients in a large bowl and beat until smooth. Frost cupcakes after they are completely cooled.Click here for hundreds more pumpkin recipes.