HEAT oven to 350ºF.
TOSS spaghetti with Parmesan and egg; press onto bottom and up side of 9-inch pie plate. Sprinkle with half the shredded cheese.
COMBINE meat and spaghetti sauce; spoon into crust. Sprinkle with remaining shredded cheese.
BAKE 30 min. or until heated through. Let stand 5 min. before cutting into wedges to serve.