Sourdough discard chocolate chip cookies

Sourdough discard cookies bake up chewy in the center with crisp edges and a faint sour tang that cuts the sweetness. You cream butter and sugar, beat in 120 g of unfed discard with an egg and vanilla, fold in flour and chocolate, then chill the dough and bake at 180C/350F for about 11 minutes. The discard adds moisture and a low background acidity, so the flavor reads a little more grown-up than a standard cookie. No active starter needed, cold from the jar is fine.

Why discard works in cookies

These rise from a small amount of baking soda, not from fermentation, so your starter does not need to be bubbly or recently fed. The acid in the discard reacts with the soda and helps the cookies spread and brown. It also keeps the crumb soft for days. If your jar is filling up faster than you bake, this is one of the easiest ways to use it. For more options, see the discard recipes hub.

Ingredients

This makes about 18 cookies at 45 g each.

• 115 g unsalted butter, softened
• 100 g granulated sugar
• 120 g light brown sugar, packed
• 1 large egg, room temperature
• 120 g sourdough discard, unfed, room temperature
• 1 tsp vanilla extract
• 200 g all-purpose flour
• 1/2 tsp baking soda
• 3/4 tsp fine salt
• 180 g semisweet chocolate chips or chopped chocolate
• flaky salt for the tops, optional

Brown sugar matters here. It holds moisture and pushes the cookies toward chewy rather than crisp. Chopped chocolate gives you pools and streaks, while chips hold their shape.

Method

1. Cream the softened butter with both sugars for 2-3 minutes until pale and fluffy.
2. Beat in the egg, then add the sourdough discard and vanilla. Scrape the bowl so the discard blends in fully and the mix looks smooth.
3. In a separate bowl, whisk the flour, baking soda, and fine salt.
4. Add the dry mix to the wet and stir just until no dry flour remains. Stop there, since overmixing toughens the cookies.
5. Fold in the chocolate.
6. Cover the dough and chill at least 1 hour, or up to 2 days. Cold dough spreads less and bakes thicker.
7. Heat the oven to 180C/350F and line two trays with parchment.
8. Scoop dough into balls of about 45 g and space them well apart, six to a tray.
9. Bake one tray at a time for about 11 minutes, until the edges are set and golden but the centers still look soft and underdone.
10. Press a few flakes of salt onto the tops if using. Cool on the tray for 5 minutes, then move to a rack.

Timings are estimates. Oven temperatures drift and tray color changes browning, so pull them when the edges hold and the middles look just shy of done. They firm as they cool.

Tips and swaps

Want	Do this
Chewier	Chill the dough overnight and pull the cookies a minute early
Crispier	Skip the chill and bake 1-2 minutes longer
More tang	Use older discard from the back of the fridge

• For thicker cookies, after scooping, freeze the balls for 15 minutes before baking.
• Stored in a sealed tin, they stay soft for about 4 days and freeze well as raw dough balls for up to 2 months. Bake from frozen and add a minute or two.
• The discard adds liquid, so the dough can feel softer than usual. The chill step handles that. If you bake by weight often, a tool like the hydration calculator helps you track what the discard contributes.

The flavor is best the next day once the tang settles in.