Confectioner's sugar Beat eggs, sour cream, water,and oil together in a large bowl until thoroughly mixed. Add cake mix and pudding mix. Beat until smooth. Stir in chocolate chips. Pour into Bundt or tube pan and bake at 350 F for 1 hour. When cool, sift powdered sugar on top of cake. Variation: Replace 1/4 cup water with Grand Marnier. Serves 8-10.