Chocolate Zucchini Cake

My friend at work gave me this recipe. It was yummy!

Ingredients:
1/2 C softened butter
1/2 C vegetable oil
1 3/4 C sugar
2 eggs
2 C grated zucchini
1 tsp vanilla
2 1/2 C flour
4 Tbsp cocoa
1 1/2 tsp cinnamon
1 tsp salt
1 tsp baking soda
1 tsp baking powder

1/2 C sour milk (add 1-2 tsp vinegar to make milk sour)

Topping:
1 C brown sugar (I used about 3/4 C)
1 C chopped nuts (I used almonds)
1 C chocolate chips
Combine and sprinkle over top before baking

Cream butter, oil, sugar & eggs. Then mix in zucchini and vanilla. Sift together dry ingredients and add to creamed mixture. Last add sour milk. Pour in greased cake pan. Sprinkle with topping and bake at 350 degrees for about 35 minutes. (Baking time varies - just check with toothpick and it's done when it comes out clean.)