I am always looking for ways to not waste my sourdough discard - it adds such great flavor to recipes, especially breads! But did you know that when I googled "sourdough discard cinnamon rolls" I could not find a single recipe? Only recipes for using mature sourdough starter. So I made up my own using Jake Cohen's basic cinnamon roll recipe! Oh, and I also eggnog-ged the recipe too! Essentially, adding discard to a recipe is just like adding flour and water. So I took out 60 g of flour, and 60 g of egg nog (milk, water, or whatever liquid you're using), and replaced it with 120 g of discard. Another thing I love about this recipe? It's not too sweet! Only 1/4 c sugar in the actual dough - the sweetness comes from the brown sugar/cinnamon filling, and of course the glaze! I like a thin glaze, not a thick frosting. So just keep an eye on how much milk (or eggnog) you're using to thin it down! Enjoy!
(I am including here Jake Cohen's original recipe, with instructions for how to incorporate the sourdough discard if desired.)