Soft, moist, and bursting with bright citrus flavor, these Sourdough Lemon Quick Muffins are the perfect way to use sourdough discard. Finished with a smooth homemade lemon glaze that drips beautifully over golden tops, they make an easy breakfast treat or afternoon snack.
Preheat the oven to 375°F (190°C) and line a muffin tin with paper liners.
In a large mixing bowl, whisk together the sugar, eggs, oil, sourdough discard, milk, lemon juice, lemon zest, and vanilla extract until smooth.
In a separate bowl, combine the flour, baking powder, baking soda, and salt.
Gradually fold the dry ingredients into the wet mixture until just combined. Do not overmix.
Divide the batter evenly among the muffin liners, filling each about ¾ full.
Bake for 18-22 minutes or until a toothpick inserted into the center comes out clean. Allow the muffins to cool in the pan for 5 minutes, then transfer to a cooling rack and cool completely.
In a small bowl, whisk together powdered sugar and lemon juice until smooth. Stir in lemon zest.
Spoon or drizzle the glaze over the cooled muffins and allow it to set before serving.