Preheat the oven to 375 degrees.
Slice rolls in half and lay them, cut side up, on a large baking sheet.
Top each half with a generous portion of either marinara or pesto, followed by a generous amount of grated mozzarella and Parmesan.
Add preferred toppings.
Place pan in the oven on the lowest rack for 8 to 10 minutes. Increase temperature of the oven to 425 and put tray on the highest rack until the cheese starts to bubble a bit and turn golden.
Remove and serve immediately.