Once you’re ready to store your focaccia bread in the freezer, you should first ensure that the focaccia bread has cooled properly and arrived at room temperature. For ease of use, you may choose to cut up your focaccia bread into squares or smaller portions if you intend to eat the bread as a snack or a side, but you can also keep it intact to use as sandwich bread as well. Flash-freeze these smaller portions by placing them on a baking tray lined with parchment paper for at least half an hour, but preferably longer. The baking tray placement should ensure space between each pre-cut portion. Once this step is done, you can move on to the step that ensures your focaccia remains fresh for as long as possible.
Wrap the flash-frozen focaccia pieces in plastic. You can also double-wrap them if you want them to last longer. The second layer can be a freezer bag, which also helps prevent freezer burns. These steps will ensure that your focaccia can stay fresh for a month or more.