Banana Cupcakes

In a large mixing bowl, cream shortening and sugar. Add the eggs, vanilla, bananas and buttermilk. Combine the flour, baking powder, baking soda and salt; add to banana mixture. Fill 18 paper-lined muffin cups two-thirds full. Bake at 350 degrees F for 15-20 minutes or until a toothpick comes out clean. Remove to wire racks to cool completely. In a small mixing bowl, cream the butter, sugar and enough milk to achieve desired spreading consistency. Frost cupcakes. ');