¼cupfinely diced red onionabout ¼ of a medium onion
¼cupfinely chopped celeryabout ½ a stalk
1tspcapersfinely chopped
¼cupmayonnaise
1tspDijon mustard
2tspwhite vinegar
Salt and pepperto taste
Sandwich Fixings
4 slices sourdough bread
1Tbspmayonnaise15 g
2slicestomato
2slicessharp cheddar cheesecan sub provolone
Instructions
Tuna Salad: Roughly smash the chickpeas with a fork or your fingers. Finely chop the onion, celery, and capers. Stir everything together, adding a pinch of salt and pepper as needed to suit your taste.
Assemble Sandwich: Spread mayonnaise onto one side of each bread slice (this replaces the butter on the outside of the sandwich, creating a golden brown crispy crust when cooked!) Onto the mayo-free side, layer in the tuna salad, tomato, and cheese.
Cook: Cook sandwiches over medium heat in a large skillet or panini press until outsides are golden brown and cheese has melted. Alternatively, set the oven to broil and cook for 3 to 5 minutes. Serve immediately.
Notes
Make it vegan by using a plant-based cheddar and mayonnaise.