– 1 (15.25 oz.) box, spice cake mix – 1 cup, canned pumpkin puree – 1 cup water – 3 large eggs – 1/2 cup, vegetable oil – 3/4 cup, caramel dessert topping, like Smuckers or Torani Caramel sauce – 1 (8 oz.) pkg. cream cheese, room temperature – 2 tbsp. milk – 1 cup powdered sugar – 1 1/2 cup, whipped toppin