Broiled Onion-Tomatoes
["2 large tomatoes, cut into halves", "1 tsp. Dijon-style mustard", "1/2 c. sliced onion, separated into rings", "1 tsp. brown sugar"]
["Place tomato halves in broiler pan or on aluminum foil. Spread each with mustard and top with onion rings.", "Sprinkle with brown sugar.", "Broil 3 minutes."]
["tomatoes", "mustard", "onion", "brown sugar"]