Ingredients:

  • 12 oz (340g) High-quality tuna, thoroughly drained
  • ½ cup (120ml) Quality Mayonnaise
  • 2 Tbsp (30g) Finely diced celery
  • 2 Tbsp (30g) Finely diced red onion
  • 1 Tbsp (15ml) Fresh Lemon juice
  • 1 tsp (5ml) Dijon mustard
  • 1 tsp (5g) Sweet pickle relish
  • ½ tsp Garlic powder
  • ¼ tsp Black pepper
  • Salt to taste
  • 4 slices High-quality sandwich bread (Sourdough or sturdy white loaf)
  • 4 oz (115g) Grated cheese blend (Mature Cheddar and Gruyère recommended)
  • 2 Tbsp (30g) Unsalted Butter, softened
  • 1 Tbsp (15ml) Mayonnaise (for grilling mix)

Instructions:

  1. Drain the canned tuna thoroughly, pressing out all excess liquid/oil. Flake the dry tuna into a mixing bowl.
  2. Add the mayonnaise, lemon juice, Dijon mustard, and relish to the tuna. Mix gently until just combined.
  3. Fold in the diced celery, red onion, garlic powder, pepper, and salt to taste. Do not overmix.
  4. In a small bowl, combine the softened butter and the 1 Tbsp of mayonnaise until smooth. This blend is for the exterior grilling surface.
  5. Spread the butter-mayo mix evenly and thoroughly onto one side of all four slices of bread. Flip two slices butter-side-down onto a clean surface.
  6. Divide the tuna mixture evenly between the two assembled slices (the non-buttered side). Spread it lightly, leaving about a half-inch border.
  7. Top the tuna filling generously with half of the grated cheese blend. Place the remaining cheese on the inside surface of the top bread slice.
  8. Place the remaining buttered bread slices (butter-side-up) on top of the filling, completing the two sandwiches.
  9. Preheat a skillet or griddle over medium-low heat. Place the sandwiches in the heated pan and cook for 4–5 minutes until the bottom is a deep golden brown.
  10. Carefully flip the sandwiches. Use a spatula to gently press down on the top of the bread, ensuring maximum contact with the pan.
  11. Cook for another 4–5 minutes, or until the second side is golden brown and the cheese is fully melted and oozy.
  12. Remove from the heat and let the sandwiches rest on the cutting board for one minute. Slice diagonally and serve immediately.