Colonial Pumpkin Bars

3/4 cup margarine
2 cups sugar
1 can (16 oz) pumpkin
4 eggs
2 cups flour
2 tsp baking powder
1 tsp cinnamon
1/2 tsp baking soda
1/2 tsp salt
1/2 tsp nutmeg
1 cup chopped walnuts

Cream margarine and sugar until fluffy. Blend in pumpkin and eggs. Add combined dry ingredients, mix well. Stir in nuts. Spread mixture into greased and floured 15-1/2 x 10-1/2 jelly roll pan. Bake at 350 degrees for 30 minutes or until toothpick in center comes out clean. Frost with cream cheese frosting.

Cream Cheese Frosting:
1 package (3 oz) cream cheese
1/3 cup margarine
1 tsp vanilla
3 cups powdered sugar
Canned milk

Combine softened cream cheese, margarine, and vanilla until well blended. Add sugar gradually. Slowly add enough canned milk to make spreading consistency.