tuna melts with horseradish mayonnaise

Ingredients For tuna melts with horseradish mayonnaise

• 6 Tbsp

  mayonnaise
• 2 can

  6-oz. cans solid white tuna, drained
• 1/4 c

  celery, finely chopped
• 2

  scallions, finely chopped
• 2 Tbsp

  fresh parsley, finely chopped
• 2 tsp

  apple cider vinegar
• kosher salt
• freshly ground black pepper
• 1 Tbsp

  whole grain mustard
• 1 Tbsp

  prepared horseradish
• 4

  slices rye bread, large slices - lightly toasted
• 8 slice

  havarti cheese, thinly sliced
• 2

  tomatoes, cut into 8 slices
• dill pickle for serving