The Best Sourdough Cookie Recipes (and How to Make Any Cookie Sourdough)
The best sourdough cookies start with a twist: tangy, soft and deeply flavorful thanks to a little sourdough starter. Here's our signature recipe plus how to adapt any cookie.
By Maya Ellison · Reviewed by Maya Ellison · Updated August 30, 2026 · 2 min read
Sourdough cookies are quietly the best trick in the sourdough repertoire. You use just a spoonful of starter — the messy discard you'd otherwise tip down the sink — and in return you get cookies that are softer, chewier and more complex than your usual batch. The starter adds tenderness, a faint, deep tang that plays beautifully with chocolate, and a baked-from-scratch flavor you can't fake.
This page has our signature sourdough cookie recipe, then the simple rules for turning any cookie recipe into a sourdough one.
Our best sourdough cookie recipe
This is the cookie we make on repeat: crisp edges, soft middles, glossy pools of dark chocolate and just enough tang to keep you going back. It's the star of our sourdough discard cookie page, which has more variations and troubleshooting.
The method: cream the butter with both sugars, beat in the egg, starter and vanilla, fold in the dry ingredients and the chocolate, then chill. The chill is the part most people skip and it's the part that makes the difference — cold dough gives you that perfect contrast between crisp outside and fudgy inside.
Bake at 350°F (175°C) for 10-12 minutes, pull them when the edges are set but the centers still look ever-so-slightly under, and let them finish on the hot tray. That's the pro move.
How to turn any cookie recipe into sourdough
You don't need a special recipe — you need a simple swap. For roughly every 60 g of starter you add, reduce the flour by about 2 tablespoons. That rebalances the extra flour and water the starter brings.
The basic idea: your starter adds both bulk and moisture, so a small flour reduction keeps the dough from getting too slack. Everything else — the butter, sugar, egg ratio — stays the same, and you get the sourdough softness without ruining the spread.
This works beautifully for chocolate chip, oatmeal, snickerdoodle and sugar cookies. For a spiced, crisp option, our sourdough discard recipes hub rounds up even more ways to use the starter.
The best cookie starts with good discard
The best-tasting sourdough cookies come from discard that's fresh-ish but not ravenous. If your starter has been sitting with a thick layer of hooch, it can turn the cookies too sour. Pour the hooch off first or feed the starter once, let it bubble, and use it. A well-fed, bubbly starter gives the mildest tang; a hungry one gives more.
Storage
Sourdough cookies keep beautifully in an airtight container at room temperature for up to a week — a slice of bread in the tin keeps them soft. They also freeze well either as baked cookies or as rolled raw dough balls for baking on demand. Honestly, they rarely last that long in our kitchen.
Ingredients
Weights in grams are the source of truth; cup measures are approximate.
- 115 g unsalted butter, softened
- 90 g light brown sugar
- 50 g granulated sugar
- 1 large egg
- 60 g sourdough starter (or discard)
- 1 tsp vanilla extract
- 175 g bread or all-purpose flour
- 1/2 tsp fine sea salt
- 1/2 tsp cornstarch
- 1/4 tsp baking soda
- 150 g dark chocolate chips
Method
Cream together the softened butter, brown sugar and granulated sugar until light and smooth.
Beat in the egg, sourdough starter and vanilla until fully combined and glossy.
Whisk the flour, salt, cornstarch and baking soda in a separate bowl, then fold into the wet mix until just combined.
Fold in the chocolate chips. Cover the dough and chill for at least 30 minutes (a 2-hour chill gives a better texture).
Preheat the oven to 350°F (175°C) and line two baking sheets with parchment.
Scoop 1.5-tablespoon portions of dough, spaced a couple of inches apart.
Bake 10-12 minutes until the edges are set and golden but the centers still look slightly underdone.
Let cool on the tray for 5 minutes, then transfer to a wire rack to finish.
Frequently asked questions
Can I use sourdough discard for cookies?
Yes — in fact discard is ideal. Any leftover unfed starter works beautifully because cookies don't need the rise; you're using the starter for its soft, slightly tangy texture. Don't let a mature, uber-sour starter linger though, or it can overpower the sugar.
Do I need to let the cookie dough rest?
A short chill helps a lot. It firms the butter so the cookies spread slowly to a perfect chewy middle, and it gives the enzymes a little time to develop flavor. Thirty minutes is fine; two hours is better; overnight is best.
How much starter should I add to my favorite cookie recipe?
As a rule of thumb, add about 60 g of starter and reduce the flour by 2 tablespoons. The starter adds both liquid and flour, so you want to keep the dough's balance right. Start there and adjust for the texture you like.
Why are my sourdough cookies puffy, not flat?
Puffy usually means the dough was too warm, the butter too soft, or there wasn't enough spread. Make sure the cookie dough is properly chilled, use real softened (not melted) butter, and don't press the balls flat before baking.
Do sourdough cookies taste sour?
Just barely. Sourdough lends a subtle, complex tang that enhances chocolate and caramel flavors rather than overwhelming them. If you want it more pronounced, use a mature, more acidic starter or let the dough rest longer in the fridge.
Can I freeze the dough for later?
Yes. Roll the cookie dough into balls, freeze them on a tray, then transfer to a bag. Bake from frozen at the same temperature, just add a couple of minutes. They'll keep for up to 3 months at their best.