Brown ground beef; drain well. Add onion, mushroom soup and cabbage. Stir together and cover. Simmer 15 minutes. Line 9x13" baking dish with 1 tube crescent rolls. Add meat mixture, then spread cheese soup on top. Top with other tube of crescent rolls. Bake 350 degrees for 30 minutes. Let cool slightly before cutting to allow to set firmly as to not crumble when serving.