So, this recipe is from my friend Britta:
Chocolate Chip Cake
1 Pillsbury yellow cake mix
1/2 c oil
1/2 c water
1 small box instant vanilla pudding
8 oz sour cream
1 4 oz bar German chocolate, grated
6 oz chocolate chips
1/4 c sifter powdered sugar
Combine first six ingredients, mixing well. Fold in all the grated chocolate except 1/4c.
Fold in chocolate chips and pour into a greased Bundt pan.
Bake 350 degrees for 50-55 minutes. Cool 10 minutes and remove from pan to cool completely.
Top with remaining chocolate and powdered sugar.