The batter alone is simply divine. This is my mom's recipe and even though I do not consider Rum a tasty treat, you can't go wrong with this at the holidays. I am not implying your holidays will be improved by large consumptions of rum, but should you need a sip to help you relax, here is an antidote even St. Nick would imbibe on. Enjoy.
1 pound butter (I use Land O Lakes)
1 pound brown sugar
2 tsp cinnamon
2 tsp nutmeg
1 quart vanilla ice cream
Cream sugar and butter until fluffy, add 1 quart partly melted ice cream. Mix well. Store covered in the freezer. In a mug add 1 shot of rum (I use Cruzin Clipper 151 proof. Have also used Captain Morgan's Spiced). 2 heaping tablespoons of mix (or to taste) and boiling water. Scrape fresh nutmeg on the top.