3/4 cup butter, softened
2-1/2 cups sugar
3 eggs
1 can (15 ounces) solid-pack pumpkin
2-1/3 cups all-purpose flour
1 tablespoon pumpkin pie spice
1 teaspoon baking powder
1 teaspoon ground cinnamon
3/4 teaspoon salt
1/2 teaspoon baking soda
1/2 teaspoon ground ginger
1 cup buttermilk
FROSTING:
1 package (8 ounces) cream cheese, softened
1/2 cup butter, softened
4 cups confectioners' sugar
1 teaspoon vanilla extract
2 teaspoons ground cinnamon