juice of half a large lemon (about 1½ tablespoons)
kosher salt
freshly ground black pepper
1 6-ounce can American Tuna
¼ cup finely diced red onion
¼ cup chopped tarragon
1 loaf of bread, bakery-style French or Italian
softened butter
1 tomato, thinly sliced
1 small bunch arugula
grated cheddar cheese
Instructions
Make the dressing: Whisk the mayonnaise with the mustard and lemon juice. Season with a pinch of salt and pepper to taste. Dressing will be thin. Taste, adjusting seasoning as necessary.
Place tuna in a large mixing bowl. Add the onion and tarragon. Pour dressing over top and combine mixture gently with a fork. Set aside.
Slice bread into eight rounds. Spread one side of each with the softened butter. Turn bread butter-side down. Begin assembling sandwiches: Place a small handful of arugula on four of the rounds. Top each with a mound of the tuna salad. Top tuna with tomato slices. Top tomato with cheese. Cover with bread.
Heat a large nonstick skillet or griddle over medium heat. When hot, add a small dab of butter, then place sandwiches on the cooking surface. Cook until golden brown. Carefully flip each one, and cook on other side until golden brown.
