In a bowl stir together the sweetened condensed milk, sprinkles, cake batter and butter until well combined. In a COLD mixing bowl whip the Heavy Whipping Cream until stiff peaks form.

Fold the heavy cream into the other mixing bowl, a little bit at a time until the mixtures are well combined.

Place all of the mixture in a loaf pan and then smooth out the top. Cover with tinfoil and put in the freezer for at least 8 hours, but overnight is better.