1 (12 oz) box Jumbo pasta shells * 1 lb. hamburger
1 (8 oz) package cream cheese * ¼ cup diced onion
2 cups fresh chopped baby spinach, or 1 package frozen spinach, thawed and the water squeezed out
1 (6 oz) can chopped black olives, if desired
1 jar spaghetti sauce * 1 (16 oz) bag shredded mozzarella cheese
Cook pasta according to package directions, drain and set aside.
Preheat oven to 350 degrees. Brown and drain hamburger. Add cream cheese, onion, spinach and olives to the hamburger and mix well. Cover bottom of baking dish with half the jar of spaghetti sauce. Spoon the hamburger mixture into each shell and arrange in the baking dish. Cover filled shells with the remaining spaghetti sauce and bake covered for 30 minutes. Remove cover and sprinkle with mozzarella cheese. Return to oven for additional 15 minutes or until cheese is melted and bubbly.