Chocolate Zucchini Cake

I have also heard this called "Picnic Cake". It is great to take on picnics or potluck dinners because it travels well.

1/2 Cup Margarine
1/2 Cup Vegetable Oil
1 3/4 Cup Sugar
2 Eggs
2 1/2 Cups Flour
2 Cups Zucchini, Shredded
1/2 Teaspoon Cinnamon
1 Teaspoon Baking Soda
1 Teaspoon Baking Powder
4 Tablespoons Cocoa
1 Teaspoon Salt
1/2 Cup Sour Milk
1 Teaspoon Vanilla

Mix the above ingredients together. Pour in a greased 9x13 baking pan. In a bowl combine: 1/2 cup chocolate chips, 1/2 cup brown sugar, 1/2 cup chopped nuts. Sprinkle over the top of the cake. Bake at 350 for 40-45 minutes.