Tuna Hot Snack
["1 (6 1/2 oz.) can tuna", "1/2 tsp. prepared mustard", "2 tsp. grated horseradish", "Parmesan cheese", "1/2 c. salad dressing", "1 tsp. Worcestershire sauce", "6 croustades or shells"]
["Flake tuna and add salad dressing, mustard, Worcestershire sauce and horseradish.", "Fill croustades or shells; top with grated Parmesan cheese.", "Bake in moderate oven until brown.", "Serves 6."]
["tuna", "mustard", "horseradish", "Parmesan cheese", "salad dressing", "Worcestershire sauce", "croustades"]