Tuna melt sandwich
Flaking the canned tuna thoroughly before mixing prevents dense clumps that block heat transfer during pressing. Canned Italian tuna packs tightly, so separate the flesh entirely with a fork before adding the chopped artichoke hearts, sun-dried tomatoes, capers, and arugula. Draining the artichoke hearts completely in a colander removes excess moisture that would otherwise steam the ciabatta bread instead of toasting it. Dress the mixture with lemon juice and extra virgin olive oil just before assembly to keep the arugula crisp and prevent the bread from becoming soggy during preparation.
Assembling these sandwiches in advance requires specific storage protocols to protect the bread structure. Wrap unpressed, assembled sandwiches tightly in plastic wrap and refrigerate for up to 24 hours. Freezing is not recommended because the high water content in the artichokes and fresh greens ruins the cellular structure of the bread upon thawing. Reheat chilled sandwiches directly on a panini press or in a cast-iron skillet over medium-low heat. Cooking at a lower temperature allows the heat to penetrate the cold center and melt the provolone cheese fully before the exterior ciabatta burns.