3. Place pan in the freezer, covered, for at least an hour, but up to a month. When ready to eat, use the parchment as a sling to pull the fudge out of the pan, and slice with a sharp knife. I cut mine into 18 1-inch squares. Store fudge in the fridge or freezer, or else it will return to the soft, batter-like consistency it began as before you froze it.