Ingredients:

• 1 can (155g) Munnujii Canned Tuna Flakes (drained)
• 2 tablespoons mayonnaise
• 1 tablespoon butter (softened)
• 1 small onion, finely chopped
• 1 small tomato, finely chopped (remove seeds)
• 2 tablespoons sweet corn (optional)
• 1 green chilli, finely chopped (optional)
• 1 tablespoon fresh coriander leaves, chopped
• ½ teaspoon black pepper powder
• Salt to taste
• ½ teaspoon chilli flakes (optional)
• ½ teaspoon oregano or mixed herbs
• 4 slices bread (white, whole wheat, or multigrain)
• 2 cheese slices (or ½ cup grated mozzarella/cheddar)
• Butter for toasting