Tips and variations:
- Flavor variation: Add a pinch of cinnamon or nutmeg for extra warmth.
- Fruit swap: Replace raisins with chopped dates, dried apricots, or candied cherries.
- Make it in layers: Alternate the creamy mixture with cookie crumbs for a frozen parfait.
- Storage: Keeps in the freezer for up to two weeks. Cover tightly to prevent freezer burn.
