1 pkg. yellow cake mix
1/4 c. water
4 eggs
1/4 c. oil
1/2 pt. sour cream (1 c.)
1 pkg. pistachio pudding

Mix ingredients and marble with pudding, in greased loaf pans and sprinkle topping of 1 cup brown sugar and 1 teaspoon cinnamon. Bake at 350 degrees for 45-60 minutes. Turn and cool.