Combine the tuna, celery, red onion,
capers, mayonnaise, Dijon,
anchovy paste,
lemon juice, pepper, salt, and
oregano in a medium bowl and stir until thoroughly combined.
Preheat a nonstick pan over medium heat.
Dress two pieces of the bread with half of the
tuna mixture, half of the sliced
tomatoes, if using, and half of the cheese. Cover with two additional slices of bread.
Add half of the
butter and half of the
olive oil to a hot pan. When hot, add 2 sandwiches and cook until browned on both sides, about 2 minutes each side. Repeat with the remaining bread and tuna mixture. Serve hot, with a side salad of hearts of palm,
avocado, tomato, and torn fresh basil leaves, if desired.
Turkey Sloppy Joes
