Preheat the broiler and set the rack about 4-5 inches from the heat source. In a small mixing bowl, break up the tuna with a fork. Toss with the celery, onion, and parsley. Add the mayonnaise, mustard, and stir to combine. Season with the pepper and lemon juice to taste. Spread the muffins out on a baking sheet and toast under the broiler for 2 minutes. Top the toasted muffins with tuna salad and cheese. Place the baking sheet under the broiler and heat for 3-5 minutes, until the cheese has melted. Serve immediately.
Serving Size: 1/2 muffin
2 English muffins, 100% Whole Wheat
8 ounces light tuna, packed in water, drained
4 tablespoons celery, minced
4 tablespoons red onion, minced
1 teaspoon flat-leaf parsley, minced
3 tablespoons light mayonnaise
1 tablespoon whole grain mustard
freshly ground black pepper, to taste
freshly squeezed lemon juice, to taste
2 ounces sharp cheddar cheese
*Serving Suggestion: Serve with sliced tomatoes, coleslaw, and fruit for a complete meal.