Freshly Milled Sourdough Discard Banana Bread

This fresh-milled sourdough discard banana bread combines ripe bananas, whole-grain flour, butter, and brown sugar for a moist, tender loaf. It’s a simple way to use extra sourdough discard and overripe bananas.

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There is something so satisfying about rescuing overripe bananas from the counter and transforming them into a warm loaf of banana bread. And if you’re like me and trying to incorporate more freshly milled grains into your kitchen, you may have discovered that your favorite recipes don’t always behave the same way.

After making this recipe with freshly milled flour, I noticed my loaf baked up a little flatter with a slight dip in the center. With a few simple tweaks, though, this version turned out beautifully moist, tender, and perfectly domed.

If you’ve struggled with adapting traditional recipes to freshly milled flour, this banana bread is for you.

Why Freshly Milled Flour Changes the Recipe

Freshly milled flour contains the bran and germ that have been removed from conventional all-purpose flour. While that means more nutrients and flavor, it also means the flour absorbs moisture differently and can create heavier baked goods.

A few small adjustments make all the difference:

• A touch more baking soda for extra lift
• A short hydration period to allow the flour to absorb moisture
• A slightly longer bake time to ensure the center is fully set

The result? A nourishing loaf your family will never guess is made with whole grain flour.

Ingredients

Wet Ingredients

• 1/2 cup melted butter
• 1 cup dark brown sugar
• 3 ripe bananas (about 350 g), mashed
• 2 large eggs
• 1/2 cup sourdough discard
• 1 teaspoon vanilla extract

Dry Ingredients

• 2 cups freshly milled flour
• 1 1/4 teaspoons baking soda
• 2 teaspoons baking powder
• 1 teaspoon salt

How to Make Fresh-Milled Sourdough Discard Banana Bread

1. Preheat the oven to 375°F and grease a standard loaf pan.
2. In a large bowl, whisk together the melted butter and brown sugar. Add the mashed bananas, eggs, sourdough discard, and vanilla. Stir until combined.
3. In a separate bowl, whisk together the freshly milled flour, baking soda, baking powder, and salt.
4. Fold the dry ingredients into the wet ingredients just until no dry streaks remain. Avoid overmixing.
5. Allow the batter to rest for 5–10 minutes before transferring it to the prepared loaf pan. This gives the freshly milled flour time to absorb moisture without significantly affecting the leavening.

6. Bake at 375°F for 8 minutes. Without opening the oven door, reduce the temperature to 325°F and continue baking for 40–50 minutes, or until the center of the loaf reaches 200°F. If the top begins to brown too quickly during the remaining bake, loosely cover the loaf with a foil tent to slow the browning while the center finishes baking.
7. Check the center of the loaf with an instant-read thermometer; it should read 200°F when the bread is done.
8. Allow the loaf to cool in the pan for 10–15 minutes before transferring it to a wire rack to cool completely.

Notes

• If your sourdough discard is especially old or very tangy, the extra 1/4 teaspoon of baking soda helps balance the acidity and supports a better rise.
• Freshly milled flour varies depending on the grain used. Hard white wheat tends to produce a lighter loaf, while hard red wheat creates a heartier texture.
• Don’t skip the short resting period—it can make a noticeable difference in the final texture.

Why We Love This Recipe

This banana bread has quickly become one of our favorite ways to use both sourdough discard and freshly milled flour. It’s simple enough for an ordinary afternoon, nourishing enough to feel good about serving to your family, and delicious enough that no one misses the store-bought flour.

The beauty of traditional cooking is learning to work with ingredients in their whole, natural form. Sometimes it takes a little experimenting, but the results are worth it.

Happy baking.

Meg

More Sourdough Baking

For your next loaf, try my 100% fresh-milled sourdough sandwich bread, or explore my no-stretch-and-fold sourdough guide for beginners.