Pumpkin Sheet Cake

1 can (16 oz) pumpkin
2 c sugar
1 c vegetable oil
4 eggs, lightly beaten
2 c flour
2 tsp baking soda
1 tsp cinnamon
1/2 tsp salt

FROSTING:

1 pkg (3 oz) cream cheese
3 tbsp margarine
1 tsp vanilla extract
1 3/4 c confectioners' sugar
3-4 tsp milk
Chopped nuts

Beat pumpkin, sugar and oil. Add eggs; mix well. Combine flour, baking soda, cinnamon and salt; add to pumpkin mixture and beat until well blended. Pour into greased 15x10 baking pan. Bake at 350 for 25-30 min. Cool. For frosting, beat cream cheese, margarine and vanilla until smooth. Gradually add sugar; mix well. Add milk until frosting reaches desired spreading consistency. Frost cake. Sprinkle with nuts.