Apple Butter Sauce
1 cup sugar
3 tablespoons unsalted butter, cut into pieces
1/3 cup water
1/4 cup dark rum
1/2 teaspoon cider vinegar
4 apples
1/4 cup heavy cream (butter)
Make sauce:
Heat sugar in a 12-inch heavy skillet over medium heat, stirring with a fork to heat sugar evenly, until it starts to melt, then stop stirring and cook, swirling skillet occasionally [...]