2 cans -5 ounces each tuna, (or chicken) \t 1 small red onion, diced \t 45g or 1 cup chopped green olives or \t 1 full avocado \t 2 Tablespoon olive oil mayonnaise \t Juice of 1 lemon \t 8 slices bread of choice \t 2 ounces fresh mozzarella, sliced (you can use DF shredded mozzarella, too) Directions: 1. In a mixing bowl, combine the tuna, onion, olives, mayo, and lemon juice, and stir to combine. 2. Preheat a cast-iron or nonstick pan over medium heat. 3. Coat with a thin layer of cooking spray, and cook the sandwiches for 2 to 3 minutes per side, until the bread is toasted and the cheese is melted. Serves 4.