this is the recipe Quick Apple Crisp 5 Granny Smith apples 1 package (9 ounces) yellow cake mix 2 tablespoons sugar 1 tablespoon ground cinnamon 1/4 cup butter or margarine, melted 1/2 cup chopped nuts Vanilla ice cream or thawed, frozen whipped topping (optional) Preheat oven to 350°F. Peel, core and slice apples using Apple Peeler/Corer/Slicer. Cut apples in half. Place apples in Deep Dish Baker. Combine cake mix, sugar, cinnamon, butter and nuts in bowl. Mix until crumbly. Sprinkle mixture evenly over apples. Bake 35-40 minutes or until apples are tender. Serve warm with ice cream or whipped topping. Is it supposed to be cooked covered or uncovered in the oven?