1Heat oven to 350 Spray a 9 x 13 baking pan w/ cooking spray. Spoon 1/3 of the sauce into bottom of pan evenly. Place 1/2 the ravioli over sauce in single layer. Sprinkle some spinach over ravioli in pan.Sprinkle w/ 1/2 the mozzarella chees and 1/2 the parmesan cheese. Add remaining ravioli in single layer. Top w/ remaining sauce. Sprinkle w/ remaining cheeses. Cover w/ foil. Bake 25 mins. Uncover, bake until bubbly, about 10 min.