Form One Large Bar
Tear off a 12 in. x 18 in. piece of plastic wrap and lay it flat on a counter or cutting board. Place the fruit and nut mixture in the center of the plastic wrap. Pull up the plastic on either side and begin to press it together to form one large bar, keeping the layer of plastic between your hands and the dough to prevent sticking. Squeeze the mixture firmly together — if it's loose, it'll fall apart when you try to eat it. You'll end up with a quarter-inch thick bar that's about 3 1/2 in. x 7 1/2 in.
Wrap the large bar tightly in the plastic. Place the bar flat in the freezer for an hour to harden slightly, which will make it easier to cut into bars.