Drain meat; return to skillet. Stir in pasta sauce, tomatoes and oregano; simmer 5 min. Remove from heat. Spoon 1 cup meat sauce onto bottom of 13x9-inch baking dish; top with layers of 3 lasagna noodles, 1 cup cheese mixture and 1 cup meat sauce. Repeat layers twice. Top with remaining noodles, meat sauce, shredded cheese and Parmesan; cover.