1 1/2 lb. ground beef
1 can cream of mushroom soup
1/3 c. chopped onion
1 tbsp. mustard
1 tsp. salt and pepper
1 tbsp. Worcestershire sauce
1 loaf French bread, sliced lengthwise

Mix all ingredients together in large bowl until well blended. Spread thickly on French bread. Broil 12 to 15 minutes. Cut into serving sizes.