Cream shortening and slowly add sugars, eggs and pumpkin.
Sift together flour, baking powder and soda; add alternately with milk to creamed mixture. Fold in walnuts and maple flavoring.
Pour into 3 greased 8" round layer cake pans. Bake in moderate oven (350°) 30 minutes. Cool on racks. Put cake layers together with Harvest Moon Frosting. Frost sides, b