Kicked-Up Tuna Melts

Ingredients

• 4 (5-ounce) cans solid white tuna packed in water, drained
• 2 stalks celery heart (with leaves), chopped
• 1/4 cup finely chopped red onion
• 1 tablespoon plus 1 teaspoon nonpareil capers, drained
• 1/4 cup plus 1 tablespoon mayonnaise, plus more for spreading
• 1 1/2 tablespoons Dijon mustard
• 2 teaspoons anchovy paste
• 1 tablespoon freshly squeezed lemon juice

• 1 teaspoon freshly ground black pepper
• 1/2 teaspoon salt
• 1/4 teaspoon dried oregano, crumbled between your fingers
• 8 slices rustic white bread or other dense white bread
• 8 thin slices tomato, optional
• 4-ounces sliced brie or provolone cheese
• 1 tablespoon each olive oil and butter
• Salad (hearts of palm, avocado, tomato and torn fresh basil leaves), for serving, optional