These cheesy bites are yummy at room temperature for up to 2 hours.
1. Preheat the broiler. Line a large baking sheet with foil.
2. Using a 3 1/4-inch round cookie cuter, cut rounds from the center of each sandwich roll. Cut the American cheese slices into rounds using the same cookie cutter. Using a 2 1/4-inch round cookie cutter cut rounds from the cheddar slices. Using a 1 1/2-inch round cookie cutter, cut 10 rounds from the provolone. Save the scraps for another use.
3. Layer american, cheddar, and provolone rounds on top of the bread rounds. Place on prepared baking sheet. Broil 4- to 5-inches from the heat for 1 to 2 minutes or until cheese is just barely melted. Let cool for 5 minutes. Cut each pizza into 6 wedges.