1 pkg. jumbo shells
1 (10 oz.) frozen chopped spinach
2 lbs. Ricotta cheese
1 egg
2 tbsp. Parmesan cheese
1 (29 oz.) jar marinara sauce
1/2 tsp. each: garlic salt, oregano
1/4 tsp. pepper

Cook shells according to package, drain immediately and arrange on flat surface. Cook spinach as directed and mix with Ricotta, Parmesan cheese and egg. Spoon into each shell. Combine marinara sauce, oregano, salt and pepper. Simmer about 2 minutes. Using 2 quart baking dishes, spread 1/2 cup of sauce into each. Arrange filled shells on sauce and bake at 350 degrees for 15-20 minutes. Serve shells with remaining sauce.