Tuna Melt Sandwich - Spend Smart Eat Smart

Ingredients

• 2 cans (5 ounces each) chunk light tuna canned in water, drained
• 1/3 cup onion, diced
• 3 tablespoons light mayonnaise
• 1/8 teaspoon ground black pepper
• 1/8 teaspoon garlic powder
• 4 slices whole wheat bread
• 4 tomato slices (1 medium tomato)
• 1/2 cup shredded cheddar cheese