The ultimate decadent accompaniment to Cranberry Sticky Toffee Date Cake, from Ashley Rodriguez’s cookbook, Let’s Stay In: More Than 120 Recipes to Nourish the People You Love.
Place brown sugar, cream, and butter in a small saucepan. Stir to combine.
Bring to a full boil over high heat. Lower the heat to medium, then boil for 5 minutes. Remove from heat and carefully whisk in rum and sea salt. Let cool to room temperature before using on cake.
MAKE AHEAD Can be made up to 1 week ahead and stored covered in the refrigerator.