Enjoy a cheesy, melty, tuna melt sandwich in this bread-free
Preheat an oven to 325 degrees and line a sheet tray with parchment paper. In a bowl, combine a half can of drained tuna with the mayo, salt, pepper, celery seed, cheddar, and finely diced pickle (approx. 1 small gherkin will do). Set this mix aside for later.
Lay the mozzarella cheese slices on the sheet tray. Set the tray in the oven and melt the cheese for about 4 minutes – long enough for the cheese to melt but to retain its shape.
Divide your tuna filling into 4 portions and set each portion near one corner of each mozzarella slice, slightly off-center.
When the cheese is cool enough to handle, use a spatula to help you pull the farthest corner of each cheese slice over its filling to form a triangle. Fold the wide corners of each triangle pocket inwards to help seal the filling in.
Set the tray back in the oven and bake for 10-15 minutes, checking frequently, until the edges and tops of each pocket are golden and crispy. You may bake longer for a fully crispy pocket, but check frequently to avoid burning.