Frosted Pumpkin Squares!!!

1 box yellow cake mix
29 oz solid pack pumpkin
3 eggs
1/2 cup oil or applesauce
2 tsp cinnamon
1 tsp baking powder

Frosting
8 oz cream cheese
3/4 stick butter or margarine
2 cups powdered sugar
1 tsp vanilla
Mix all bar ingredients together in large bowl, spread in greased cookie sheet and bake at 350 degrees for 30 minutes.Combine softened cream cheese and butter with powdered sugar and vanilla. Spread over bars.