Sweet Potato Cupcakes

Or for the politically correct, Yam cupcakes! I will admit first off that I LOVE yams, so I am continually looking for Yam recipes.

2 C flour
2 tsp baking powder
1 tsp Cinnamon
1/2 tsp baking soda
1/4 tsp salt
1 C butter (dang that's alot!)
1-1/2 C sugar
3 eggs
1-17.2 can unsweetened sweet potatoes (I will be using fresh), mashed
1/2 tsp vanilla

Preheat oven to 350 and line muffin tin with paper cups. In medium bowl stir together dry ingredients. In large bowl, mix together on medium speed, butter and sugar. Add eggs 1 at a time until combined. Add yams and vanilla then gradually mix in flour mixture. Divide evenly in muffin cups and bake 20 minutes. Cool on wire rack for 1 minute then remove from pan and cool completely. Top with the following frosting.

8 oz cream cheese, softened
2/3 c butter
2 tbsp milk
8 c powdered sugar (adding 1/2 c at a time until smooth)