1 lg. jar Prego spaghetti sauce
16 lg. shells
1 lb. ground beef
1 chopped onion
1/4 tsp. salt
1/4 tsp. pepper
1/4 tsp. garlic powder
1/4 tsp. basil
Grated Parmesan cheese
1 egg, beaten
1 box defrosted chopped spinach

Parboil shells. Brown ground beef with onion; drain. Mix spices and 1/4 teaspoon Parmesan cheese with egg and a little milk. Mix all ingredients together and fill shells. Line side by side in casserole which is covered with sauce. Spread sauce on top of shells. Cover shells with a layer of Mozzarella cheese then grated Parmesan. Bake at 350 degrees for one hour.