1 (12 oz.) pkg. jumbo macaroni shells
1 (15 oz.) Ricotta cheese
2 pkgs. Stouffer's spinach souffle
1 (8 oz.) pkg. Mozzarella cheese, shredded
Spaghetti sauce

About 1 1/2 hours before, prepare spinach souffle. Prepare macaroni according to directions; drain well. After souffle is baked, place in large bowl and add the Ricotta cheese and Mozzarella cheese. Stuff each shell with mixture. Arrange shells in casserole and cover with sauce. Bake in 350 degree oven for 30 minutes. These shells freeze well without the sauce.