Pumpkin Trifle

Preheat oven to 350 degrees. Combine cake mix, water and egg in a large bowl. Mix well. Pour into an ungreased 8x8 inch baking pan. Bake 35 to 40 minutes until a toothpick comes out clean. Cool 10 minutes. Remove from pan and cool completely on a rack. Crumble cake. Set aside 1/4 cup crumbs. Whisk together milk and pudding mixes in a large bowl until slightly thickened. Let stand 2 minutes until soft set. Layer 1/4 of cake crumbs in a trifle dish or 3 1/2 quart glass serving bowl. Top with 1/2 of pumpkin, 1/4 of cake crumbs and 1/2 of whipped topping. Repeat layering. Garnish top with reserved crumbs.