Open-Faced Tuna Melt Sandwich

Details

Ingredients

• 2 (3 ounce) pouches white albacore tuna, drained
• 3 tablespoons Primal Kitchen™ Avocado Oil Mayonnaise, plus more for spreading
• 2 teaspoons Dijon mustard
• 2 tablespoons finely chopped red onion, or more to taste
• 2 teaspoons capers, drained
• 2 tablespoons chopped cornichons
• 1 tablespoon lemon juice
• ¼ teaspoon fresh or dried thyme leaves
• Sea salt and freshly ground black pepper to taste
• 3 slices whole wheat or whole grain bread
• 6 thin slices tomato
• 3 large slices Gruyere, white Cheddar, or provolone cheese