Oh these photos were making me want another one of these today for lunch :)
The instigator for this fancy sandwich? Landana Asparagus Gouda from my favorite cheese shop, Murray's at Kroger. Fresh, green, spring flavor with that characteristic creamy texture but a bit saltier than some Goudas. Unfortunately, it is a seasonal cheese. So why am I posting this in fall? Because tuna and asparagus can be found all year long and this panini is too delicious to put off until next spring. There are so many wonderful melting Gouda cheeses, you could try a different one each month til spring arrives again :)
Much like a dressing makes the salad, a sauce makes the sandwich. Tarter with a couple of twists.