Sourdough Banana Bread
Discard · makes bread

Sourdough Banana Bread

Discard recipe

Two black bananas. Some leftover starter. One forgiving loaf.

No wait. No starter feed. No fancy technique. Just a way to use what's on your counter and turn it into something warm.

Ingredients

Ingredient Amount Notes
Very ripe bananas 260 g (about 2 large) Black-spotted, soft. The blacker the better.
Sourdough discard 120 g Straight from the fridge, unfed
Brown sugar 120 g Light or dark
Eggs 100 g (about 2 large) Room temp
Melted butter 85 g Or neutral oil
Vanilla 5 g About 1 tsp
All-purpose flour 200 g
Baking soda 5 g About 1 tsp
Salt 3 g About ½ tsp
Cinnamon 3 g Optional but very good

Method

1Preheat

Oven to 350°F. Butter and line a 23 cm loaf pan.

2Mash the bananas

Fork-mash the bananas in a large bowl. Some lumps are fine — they melt into pockets of banana flavor.

3Mix wet

Add discard, brown sugar, eggs, melted butter, and vanilla. Whisk until smooth.

4Add dry

Sprinkle flour, baking soda, salt, and cinnamon over the wet ingredients. Stir with a spatula until just combined. Lumps okay. Overmixing is the only way to ruin this bread.

5Bake

Pour into the pan. Bake 55–65 min until a toothpick comes out with moist crumbs (not wet batter). Internal temp ~203°F.

6Cool

10 min in the pan, then out onto a rack. Try to wait until warm — not hot — to slice.

Compared to

The published recipes I learned from and measured mine against. Respect to the bakers who came first.

Ultimate Banana Bread
Claire Saffitz · Dessert Person

Claire's non-sourdough version. Hers is sweeter (83% sugar:flour vs your 60%) and adds malted milk powder. Your discard adds tang and replaces some flour + liquid.

Sourdough Banana Bread
King Arthur Baking

Direct sourdough-discard cousin. Similar discard ratio (~60% to flour); yours uses brown sugar only where KA mixes brown + granulated.