3 lbs. hamburger
1 med. onion, chopped
1 pt. spaghetti sauce
1 (8 oz.) pkg. shredded Swiss cheese
1 (16 oz.) pkg. Cheddar cheese
2 tubes crescent rolls
8 oz. sour cream
1/2 tsp. oregano

Brown hamburger and onions; drain grease. Mix with spaghetti sauce. Put in 9x13 inch baking dish. Spread both kinds of cheese over meat. Mix sour cream with oregano. Spread each crescent roll with sour cream mixture and roll up. Line rolls up in 2 rows on top of hot dish. Bake at 350 degrees for 30 to 40 minutes.