Jarred roasted peppers hold a bright and zesty filling of tuna, mayonnaise, capers and lemon juice in this Spanish-style appetizer. (The tuna salad is great on its own, too!).
Find Spanish piquillo peppers at specialty stores such as Whole Foods or online. Or just skip them! The filling is delicious as a spread with crackers (and you can even add some minced ordinary roasted red peppers, if you want, for color and flavor).