1 box Duncan Hines butter recipe
4 eggs
1/2 c. oil
1/4 c. water
1 pkg. instant vanilla pie filling
8 oz. sour cream
6 oz. chocolate chips
1/2 or 1 c. walnuts, chopped

Put together first 6 ingredients and mix. Fold chocolate chips and walnuts in with a spoon. Bake at 350 degrees. DO NOT open door for 1 hour. Test, if not done, bake a little longer.