Chocolate-Cream Cheese Bars
["1 box chocolate cake mix", "2 eggs", "1/3 c. vegetable oil", "1 (8 oz.) pkg. cream cheese", "1 c. chocolate chips", "1/2 c. nuts (optional)"]
["Mix cake mix, 1 egg and oil until crumbly.", "Reserve 1 cup for topping.", "Pat remaining mixture into 9 x 13-inch pan.", "Bake at 350\u00b0", "for 15 minutes."]
["chocolate cake mix", "eggs", "vegetable oil", "cream cheese", "chocolate chips", "nuts"]