Sourdough muffins are a tasty twist on a classic muffin recipe, made with a sourdough starter instead of regular yeast or baking powder. Though they're a popular sourdough breakfast treat, they're equally delicious sourdough desserts! The unique, tangy flavor from the fermentation process pairs well with ingredients like fruit, chocolate, and herbs. Reduce waste by using sourdough starter to make fluffy, moist Sourdough Applesauce Muffins or Morning Glory Muffins. For a sweeter treat, make this popular recipe for Sourdough Blueberry Muffins.