1/2 c. soft butter or shortening
1/2 c. vegetable oil
1 3/4 c. sugar
2 eggs
1 tsp. vanilla
1/2 c. sour milk
3 c. unsifted flour
4 tbsp. cocoa
1/2 tsp. baking powder
1 tsp. baking soda
2 c. grated zucchini
1 1/4 c. chocolate chips
1/2 tsp. cinnamon (optional)
1/2 tsp. ground cloves (optional)

Cream butter, oil and sugar; add eggs, vanilla and milk. Beat until blended. Mix together all dry ingredients and add to creamed mixture. Beat well; stir in zucchini by hand. Pour into greased and floured 9 x 13 pan. Sprinkle with chocolate chips.

Bake at 325°F for 40 to 45 minutes.