Pumpkin Orange Squares

1 cup sugar
½ cup shortening
1 cup canned pumpkin
2 eggs
1/3 cup orange juice concentrate
1 2/3 cups flour
1 teaspoon baking powder
½ teaspoon baking soda
½ teaspoon allspice
½ teaspoon cloves
½ teaspoon cinnamon
½ teaspoon nutmeg

Cream sugar and shortening. Combine pumpkin, eggs and orange juice concentrate. Combine dry ingredients and stir into pumpkin mixture. Turn into greased 9 x 13 inch pan. Bake at 350 degrees F 30-35 minutes. These squares can be frosted or served with whipped cream.