Spread 1/3 of the sauce in the bottom of an 11x7 in. baking dish.
Arrange 1/2 of the ravioli over the sauce.
Sprinkle 1/2 of the mozzarella cheese and 1/2 of the Monterey Jack cheese over the ravioli.
Repeat layers, ending with the last of the sauce on top.
Cover with aluminum foil.