1 pkg. yellow cake mix
1 (4 serving) pkg. Jell-O vanilla instant pudding
1 pkg. German sweet chocolate, melted
4 eggs
1 1/4 c. buttermilk
1/4 c. oil

Combine cake mix, pudding, chocolate, eggs, buttermilk and oil in a bowl. Blend for 4 minutes. Pour into a greased and floured 9 x 13 cake pan.

Bake at 350°F for about 35 to 45 minutes or bake until cake tester in center comes out clean and cake begins to pull away from pan.