Zucchini Chocolate Cake
["1/2 c. soft butter", "1/2 c. oil", "1 3/4 c. sugar", "2 eggs", "1/2 c. sour milk", "1 tsp. vanilla", "2 c. flour", "1/2 tsp. salt", "4 tsp. cocoa", "1 tsp. soda", "1/2 tsp. cinnamon", "2 c. grated zucchini", "chocolate chips", "1/4 c. chopped nuts"]
["Cream butter, oil and sugar; add eggs, vanilla and sour milk; blend thoroughly.", "Sift together flour, salt, cocoa, soda and cinnamon.", "Blend with creamed mixture.", "Stir in zucchini.", "Pour in 9 x 13-inch pan.", "Sprinkle with chocolate chips and nuts.", "Bake at 325\u00b0 for 45 minutes, then sprinkle with more chocolate chips while it is hot."]
["butter", "oil", "sugar", "eggs", "sour milk", "vanilla", "flour", "salt", "cocoa", "soda", "cinnamon", "zucchini", "chocolate chips", "nuts"]