These Sourdough Lemon Poppyseed Muffins are light, tender, and bursting with fresh lemon flavor, all while using up your sourdough discard. They’re ready in just 30 minutes and so easy to make - perfect for a quick breakfast or snack.
In a large mixing bowl, whisk the melted butter and sugar together until smooth and slightly lighter in color. Add the eggs, one at a time, whisking well after each addition. Stir in the milk, sourdough discard, lemon juice, lemon zest, and lemon extract until fully combined.
½ cup (113 grams, 1 stick) unsalted butter, 1 cup (200 grams) granulated sugar, 2 large (100 grams) eggs, ½ cup (120 grams) whole milk, ½ cup (100 grams) sourdough starter discard, ¼ cup (about 1 large lemon) lemon juice, 1 tablespoon (about 1 lemon) lemon zest, 2 teaspoons lemon extract
Add the dry ingredients to the wet mixture. Gently fold the batter together, mixing just until the flour is fully incorporated. Be careful not to overmix to keep the muffins light and tender.
Divide the batter evenly between the 12 muffin cups.
Bake for 12–14 minutes, or until the tops are golden brown and a toothpick inserted into the center comes out clean.
Let the muffins cool in the pan for 5 minutes before transferring them to a wire rack to cool completely. Enjoy your muffins warm with butter, jam, or as is!
Notes
Optional Lemon Glaze: For a sweet finishing touch, drizzle a glaze made from 1 cup powdered sugar and 1-2 tablespoons lemon juice (adjust for desired consistency) over cooled muffins.
Quick Tip: Muffins made with all butter tend to firm up at room temperature since butter solidifies as it cools. A quick warm-up in the microwave for 10-15 seconds restores their soft texture.
Storage: Keep muffins in an airtight container at room temperature for 3-4 days or freeze them for up to 3 months.