Brush with extra virgin olive oil.

Stuff and press between the hot plates of your panini grill. If you don't have a panini grill, try making the sandwich on top of the stove with a frying pan or skillet. I recommend a grill pan since you'll be able to replicate those distinctive grill marks. Remember to flip the panini and cook both sides, pressing down with a spatula. Eat hot off the grill.