This quick sourdough discard coffee cake requires no chilling and no fermentation, making it ideal for spontaneous baking. The batter comes together easily, and the cake bakes up soft, rich, and flavorful with cinnamon sugar throughout. Sourdough discard adds moisture and subtle tang without overpowering the vanilla cake. This recipe is especially helpful when you want to bake with discard the same day and still serve something that feels intentional and well-developed.
