In mixing bowl, 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 15 x 10 x 1 inch baking pan. Bake at 350° for 20 minutes, or until cake tests done. Cool. For frosting, beat the cream cheese butter and vanilla in a mixing bowl until smooth. Gradually add sugar; mix well. Add enough milk to make frosting desired spreading consistency and frost cake. Sprinkle with nuts. Serves 20 ? 24.