Spread 1/2cup of spaghetti sauce in an ungreased 13-inx9-in.x2-in. baking dish. Layer with half of the ravioli, 1-1/4 cup sauce, 1 cup of cottage cheese and 2 cups of mazzarella cheese. Repeat layers. Sprinkle with the parmesan cheese.
Bake,uncovered, at 350 degrees for 30-40 minutes or ubtil bubbly. Let stand 5-10 minutes before serving.
NOTE: 4-5 cups of any style cooked ravioli may be substituted for frozen cheese ravioli.