Cake
1/2 c. oil
1/4 c. margarine
1 3/4 c. sugar
2 eggs
1/2 c. sour milk or buttermilk
2 1/2 c. flour
1/2 tsp. salt
1 tsp. baking soda
4 Tbsp. cocoa
2 c. grated zucchini
Topping
3 Tbsp. sugar
3 Tbsp. brown sugar
1 1/2 c. chocolate chips
1/2 c. chopped nuts (optional)
Mix cake ingredients in order. Pour into greased and floured 9×13 pan. Mix topping ingredients and sprinkle over batter in pan. Bake at 350 degrees for 40 to 45 minutes.