1 box Duncan Hines yellow cake mix
1 box (small) chocolate instant pudding
4 eggs
1/2 c. vegetable oil
1/4 c. water
1 tsp. vanilla
8 oz. sour cream
6 oz. Hershey chocolate chips

Combine cake mix, and instant pudding together. Add eggs, oil, water, sour cream, and vanilla. Mix on medium speed until well blended. Fold in chocolate chips. Pour into a greased and floured tube pan and bake on 350 degrees for about 50 or 55 minutes, or until springs back when lightly touched. Do not overbake.