Combine all ingredients and mix well. Bake in ungreased 11" x 17" jelly roll pan at 350 degrees for 25 to 30 minutes. Cool and frost with Cream Cheese Icing.Cream Cheese Icing3 oz cream cheese, 3/4 stick butter, 1 tsp. vanilla, 1 T. milk, 1 1/2 cups powdered sugar. Beat all together and spread over Pumpkin Bars.