Tuna melt

https://www.delish.com/cooking/recipe-ideas/a26146096/tuna-melt-recipe/

• 1/3 c.  mayonnaise
• Juice of 1/2 lemon
• 1/2 tsp crushed red pepper flakes (optional)
• 2  (6-oz.) cans tuna
• 1 ribs celery, finely chopped
• 2 dill pickles, finely chopped
• 1/4 cup finely chopped red onion
• 2 tbsp freshly chopped parsley
• Kosher salt
• Freshly ground black pepper
• 8 slices bread, such as sourdough
• 2 tbsp. butter
• 1 tomato, sliced
• 8 slices cheddar

Directions

• Step 1
  • Preheat oven to 400°. In a large bowl, whisk together mayonnaise, lemon juice, and red pepper flakes (if using).
• Step 2
  • Drain tuna then add to mayonnaise mixture. Use a fork to break up tuna into flakes. Add celery, pickles, red onion, and parsley and toss to combine. Season with salt and pepper.
• Step 3
  • Butter one side of each bread slice. Top an unbuttered side with approximately 1/2 cup of tuna salad, 2 to 3 slices tomato, and 2 slices of cheese. Top with another slice of bread, buttered side facing up. Repeat with remaining ingredients and place on a large baking sheet. Bake until cheese is melty, 5 to 8 minutes.