These Sourdough Coffee Cake Muffins combine the tangy flavor of sourdough starter with a cinnamon-sugar streusel topping, making a perfect moist and tender treat for breakfast or snack time.
For extra flavor, add 1/2 cup chopped nuts or blueberries to the batter before baking.
Find it online: https://grilldrip.com/sourdough-coffee-cake-muffins/