DOUGHNUTS! It is best to assemble these doughnut sandwiches, dip them in chocolate, and eat them right away while the ice cream is frozen, the doughnuts are fresh, and chocolate is still a little melty.
You could make them in advance, chocolate and all, then freeze them to eat later (we did for a few too many), but the chocolate gets really hard (as do the doughnuts) and actually, we recommend that you NOT freeze-for-later at all. So never mind. Just make them and eat them.
Happy National Coffee Ice Cream Day!
Click here for this recipe: http://www.tastespotting.com/features/coffee-ice-cream-glazed-doughnut-sandwiches-recipe