Chocolate Zucchini Cake
["1/2 c. butter", "1/2 c. oil", "1 3/4 c. sugar", "2 eggs", "2 tsp. vanilla", "1/2 c. sour milk", "2 1/2 c. flour", "4 Tbsp. cocoa or 1 pkg. Choco-bake", "1 tsp. soda", "1/2 tsp. cinnamon", "1 tsp. salt", "1 tsp. baking powder", "2 c. finely diced zucchini", "1/2 c. chocolate chips", "1/4 c. nuts"]
["Cream butter, oil and sugar.", "Add eggs, vanilla and milk. Blend well.", "Stir in all dry ingredients.", "Stir in diced zucchini. Put into a 9 x 13-inch pan.", "Sprinkle with chocolate chips and nuts.", "Bake at 325\u00b0 for 40 to 45 minutes."]
["butter", "oil", "sugar", "eggs", "vanilla", "sour milk", "flour", "cocoa", "soda", "cinnamon", "salt", "baking powder", "zucchini", "chocolate chips", "nuts"]