Self-Frosting Chocolate Zucchini Cake

From my friend Kim. Tasty and oh, so healthy thing to do with zucchini.

½ cup margarine
1 teaspoon vanilla
½ cup oil
½ cup sour milk or buttermilk
1-3/4 cup sugar
4 to 6 Tablespoons cocoa
2 eggs
½ teaspoon cinnamon **
2 cups finely grated zucchini
1 teaspoon salt
1 teaspoon soda
1 teaspoon baking powder
2-1/2 cups flour

Mix the oil, margarine, and sugar. Add the eggs. Sift the dry ingredients including the cocoa. Add the dry ingredients alternately with the milk to the sugar mixture. Add the remaining ingredients except the zucchini. Blend well. Stir in the zucchini by hand and pour the batter into a 13 x 9 inch cake pan. Mix the following and crumble on the top of the cake:

¾ cup chocolate chips ¾ cup brown sugar
¾ cup chopped nuts

Bake at 350 degrees for 40 to 45 minutes or until done. Serves 12.

** Omit the cinnamon to bring out a better chocolate taste. - That was in the original. I never use cinnamon. If you do, tell me about it.