1 c. sugar
1 c. firmly packed light brown sugar
4 large eggs
1 (15 oz.) can pumpkin
3 c. all-purpose flour
2 tsp. baking powder
1 tsp. ground cinnamon
1/2 tsp. baking soda
1/4 tsp. salt
3/4 c. milk
Preheat oven to 350 degrees. Grease and flour 3 (9-inch) cake pans; set aside. In a large bowl, beat butter and sugars at medium speed with a mixer until fluffy. Add eggs, one at a time, beating well after each addition. Beat in pumpkin. In a medium bowl, combine flour, baking powder, cinnamon, baking soda and salt. Gradually add to butter mixture alternately with milk, beginning and ending with flour mixture, beating just until combined after each addition. Divide batter evenly between prepared pans. Bake for 18-22 minutes (my baking time was way different - see my notes below) or until a wooden toothpick inserted in center comes out clean. Cool in pans on wire rack for 10 minutes. Remove from pans and cool completely on wire rack. Spread frosting between cake layers and then frost the top and sides of the cake.
1 c. butter, softened
1/2 tsp. ground cinnamon
pinch of salt
5 c. powdered sugar
1/4 - 1/2 c. heavy whipping cream
In a large bowl, beat butter, cinnamon and salt at medium speed with a mixer until creamy. Gradually add powdered sugar, beating until smooth. Add cream and beat until reaches desired consistency.