2Begin layering the cold cuts on the bottom half, then layering on Kraft Singles Extra Cheddar slices and top with half of the basil leaves. Close bun. If you are adding onions or peppers, add them into this step.
3Heat a panini press to hot or a grill pan over hot heat. Brush one tbsp. of olive oil on the top half of the sandwich and brush the other tbsp. of olive oil on the panini press or grill. Place sandwich on top of brushed oil and brown both sides of sandwich.
4In the meantime, line a small sheet pan with foil and mix the parmesan, mozzarella, provolone and oregano in a small bowl and set aside.
5Once sandwiches are browned, remove and place on sheet pan. Top the tops of each sandwich with the shredded cheese mixture, basil leaves and sliced tomatoes. (Try to get the cheese to stay in place by pressing down with your hands).
6Place the pan in the hot oven for 5-7 minutes to melt and brown cheese. To brown further, place under a broiler for a few minutes.