Brown ground beef and add 3/4 jar of spaghetti sauce. Stir well. should be thick not saucy. Sprinkle Parmesan Cheese over sauce mixture. Just a thin coating. Leave on low heat.
Boil Jumbo Shells till almost done. Drain and run under cold water till cool enough to handle.
poor remaining 1/4 of Sauce into bottom of 9 x 13 pan spread evenly. Spoon sauce mixture into shells and place in pan. Spoon sauce from second jar over shells and cover with shredded cheese and Bake at 350 degrees fro 30 mins.