This is a Tom Colicchio recipe (Wichcraft) that I cut in half, but once you make the pesto, it's easy to make 1 or 20. (I still don't see how they get 20 out of it--lol)
04Cut the crusts off the sandwiches, then cut into triangles and serve.
05MAKE AHEAD The panini can be prepared through Step 3 and stored on a wire rack at room temperature for up to 6 hours. Reheat on a baking sheet in a 350°F oven until crisp.