Preheat the oven to 350 degrees F. Grease and flour a 15x10 inch pan. Mix oil, sugar, pumpkin, eggs, flour, baking powder, soda, salt and cinnamon until well blended. Pour into prepared pan and bake for 20 minutes; cool. For frosting, mix cream cheese, vanilla, butter and powdered sugar until well blended. Spread on cooled bars and garnish with chopped nuts, if desired. |