1 box Duncan Hines butter cake mix
1 small milk chocolate instant pudding
1 c. oil
1/4 c. water
1 tbsp. vanilla
8 oz. sour cream
4 eggs
6 oz. bag chocolate chips

In a large bowl, blend all ingredients except chocolate chips. Then stir in the chips. Pour into a greased Bundt pan or tube pan.

Bake for 1 hour at 350°F.