18 1/2 oz. pkg. dark chocolate cake mix
4 1/2 oz. pkg. instant chocolate pudding mix
8 oz. sour cream
1/2 c. oil
1/2 c. lukewarm water
4 eggs
1 1/2 c. semi-sweet chocolate chips

Mix first 6 ingredients in a large bowl with electric mixer at medium speed. Beat about 5 minutes. Stir in chocolate chips. Turn into greased 12 cup fluted or swirled tube pan. Bake in preheated 350 degree oven 1 hour or until cake tester comes out clean. Cool 10 minutes. Loosen edges and turn out. Cool completely. Serve with whipped cream or vanilla ice cream.