Open-Faced Tuna Sandwiches with Arugula and Sweet-Pickle Mayonnaise
These sandwiches are out-of-this-world fantastic! They’re my take on a tuna melt, complete with gooey cheddar cheese and a sweet-and-sour mayo, but with plenty of lemony tang and peppery arugula. Be sure to slather it on the bread generously before piling on the tuna steak, greens, and cheese to keep everything moist and delicious.