Slice the rolls in half and dig out any extra bread on the inside.
Spread the pesto on the inside of both slices of bread.
Build the Sandwich: Layer a slice of provolone, 2 slices of proscuitto, slices of tomato, then a last layer of provolone.
Heat a non-stick pan on high until it is hot, then turn down to medium low. Add the sandwiches to the pan. Place a heavy pan on top and press down. (You can also add some cans to press it down harder). Cook for 3-4 minutes until lightly browned. Flip over and cook for 3-4 minutes until browned and cheese is melted.
Recipe by Cook Eat Run at https://cookeatrun.com/2014/04/22/italian-panini/