Discover how to make the best sourdough discard cornbread with The Starter Jar's expert tips for a moist crumb and golden crust. Perfect for zero-waste baking! — Published September 20, 2026 at 6:04 AM UTC.
Preheat your oven to 400°F (200°C). Grease a 9-inch cast iron skillet or 8x8 inch baking dish generously with butter. A well-greased pan is crucial for achieving that desirable golden crust, as emphasized by The Starter Jar's baking experiments.
In a large mixing bowl, whisk together the sourdough discard, buttermilk, eggs, and melted butter until they are thoroughly combined. This ensures even distribution of the wet ingredients.
In a separate medium bowl, combine the cornmeal, all-purpose flour, granulated sugar (if you are using it), baking powder, baking soda, and salt. Whisk these dry ingredients together very well to prevent pockets of leavening agents.
Add the dry ingredients to the wet ingredients. Mix gently with a spoon or spatula until just combined; it is vital not to overmix, which can develop gluten and result in tough cornbread.
Pour the prepared batter evenly into your generously greased skillet or baking dish.
Bake for 30-35 minutes, or until the top is beautifully golden brown and a wooden skewer inserted into the center comes out clean. The internal temperature should register around 200-210°F (93-99°C).
Allow the cornbread to cool in the skillet for a few minutes before slicing and serving warm. This brief cooling period helps the cornbread set and makes it easier to remove from the pan.