3 T Butter or margarine 3 ea Onions;sliced in small rings 3 oz Emmenthaler cheese; grated 1 t Dry mustard 2 c Spaetzle noodles 2 T Chives; chopped Heat butter in frypan, add onions, and brown lightly. Toss cheese with dry mustard. Add cooked noodles to cooked onions and cheese; mix well. Place mixture in an ovenproof casserole. Bake at 300 degrees F. for 20 to 30 minutes or until hot and bubbly. Sprinkle top with chopped chives before serving.