For an extra layer of flavor, consider adding a sprinkle of garlic powder to the mayonnaise mixture. Feel free to experiment with different cheeses, such as provolone or mozzarella, to customize the flavor profile. If you prefer a spicier kick, increase the amount of Sriracha to your liking. This bread is best served immediately, but leftovers can be stored in the refrigerator for up to 2 days. Reheat in the oven or toaster oven for optimal results.