Instructions: 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.

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