The rolls can be frozen. Leftover panini make terrific garlic bread. This makes 4 or 5 generous rolls. The sponge can be used after one hour or up to three hours later. You can refrigerate overnight and start the next morning if you get called away.
Leftovers are perfect for single portion garlic bread loaves.
Remember to name your panini something special - marketing is everything. Stir to combine a couple of minutes to produce a gloppy pudding-like mixture. Add water or flour in order to achieve the right consistency. Knead for about 8 minutes. Dough is best if it is slacke rather than firm.