Chocolate Zucchini Cake

This is a new recipe for me. I add it to the blog now because it is good to have this time of year. The full recipe make a good sized cake or half it for one nice sized loaf. I can cook one loaf in the solar oven and it doesn't heat up the house.

Chocolate Zucchini Cake
1/2 c. butter
1/2 c. vegetable oil
1 3/4 c. white sugar
2 eggs
1/2 c. sour milk
1 t. vanilla extract
2 c. all-purpose flour
1 t. baking soda
1/2 t. ground cinnamon
1/2 t. ground cloves
1/2 t. salt
4 T. unsweetened cocoa
2 1/2 c. grated zucchini
1/2 c. ground walnuts (any kind of nuts)
1/2 c. semi-sweet chocolate chips

Cream together butter or margarine, vegetable oil and sugar.
1 -Add eggs, sour milk and vanilla. Blend well.
2 -In a separate bowl, sift dry ingredients together.
3 -Blend dry ingredients in the butter mixture.
4 -Add grated zucchini mixing well
5 -Spread in a greased floured 9x13 pan. Sprinkle nuts and chocolate chips on top.
6 -Bake at 325 for 45 minutes.