Preparation:
bring a large pot of salted water to a boil add manicotti and simmer for 8 minutes, drain combine beef and onions in a skillet, over a medium flame heat and stir to brown beef and soften onions remove from heat, drain, and allow to cool add remaining ingredients, except marinara sauce and cheese-mix well stuff into manicotti shells place into 9x13x2 glass baking pans pour marinara sauce over all top with sliced mozzarella cover with foil bake @ 350 degrees for 30-40 minutes remove from oven, allow to stand for 15 minutes remove and discard foil cover serve hot |