Soft and Chewy Sourdough Chocolate Chip Cookies
These sourdough chocolate chip cookies turn discard into something special: edges that snap, a fudgy middle, and a subtle tang from the starter. They come together in one bowl and taste like a bakery cookie with barely any extra effort.
You get that deep butterscotch note from melted butter, loads of dark chocolate, and a soft chew that holds for days. The dough chills while the oven heats up, so they fit right into a weeknight without fuss.
What Makes These Cookies So Good
The tangy background from sourdough discard cuts the sweetness in a way that makes you reach for a second cookie. It is not sour, just more interesting than a plain chocolate chip cookie.
Melting the butter instead of creaming it keeps the cookies dense and chewy, with a crackly top and shiny surface. Chilling the dough firms the butter back up so the cookies spread less and develop a richer flavor.
A full cup of dark chocolate chips means every bite has a gooey pocket. The texture stays soft on day two and three, so you can make a batch and snack all week.
Ingredients
- 1/2 cup (113g) unsalted butter: melted and cooled slightly, browned if you like a deeper flavor
- 1/2 cup (100g) packed light brown sugar: for moisture and chew
- 1/4 cup (50g) granulated sugar: helps the edges crisp up
- 1 large egg: straight from the fridge is fine, but room temp blends faster
- 1 tsp vanilla extract: the real stuff makes a difference here
- 1/3 cup (80g) sourdough discard: unfed, straight from the fridge, 100% hydration starter
- 1 1/4 cups (160g) all-purpose flour: spooned and leveled, not scooped
- 1/2 tsp baking soda: fresh, so the cookies puff and then settle into crinkles
- 1/2 tsp fine sea salt: brings out the chocolate and the tang
- 1 cup (170g) dark chocolate chips or chopped chocolate: 60–70% cacao gives the best balance
Variations / Substitutions
- Chocolate: swap dark for semisweet chips or chop a bar by hand for uneven melty chunks
- Mix-ins: fold in 1/3 cup toasted walnuts or pecans right after the chocolate
- Gluten-free: use a 1:1 gluten-free flour blend that includes xanthan gum, same weight measurement
- Dairy-free: replace butter with a stick-style vegan butter, and use dairy-free chocolate chips
- Starter amount: up to 1/2 cup (120g) discard works if you want more tang, just add an extra tablespoon of flour to keep the dough from getting too slack
Want a cookie with even deeper caramel notes? Try these browned butter pecan chocolate chip cookies.
How to Make Sourdough Chocolate Chip Cookies
Step 1: Whisk the Butter and Sugars
Pour the melted butter into a large mixing bowl and add both sugars and the salt. Whisk for about 1 minute, until the mixture looks smooth and no streaks of butter remain.
You will see a glossy, slightly grainy paste that is warm to the touch. The salt dissolves into the liquid butter here, so the cookies season evenly.
Step 2: Add the Discard, Egg, and Vanilla
Crack in the egg, then add the vanilla and the sourdough discard. Whisk until the mixture turns thick and uniform, about 30 seconds.
The color lightens a few shades and the texture goes from slick to a bit puffy. You are looking for a smooth batter with no visible strands of discard.
Step 3: Fold in the Dry Ingredients
Switch to a spatula and dump in the flour and baking soda. Fold gently until the flour just disappears, about 15 to 20 strokes. A few tiny flour streaks will hydrate during the pause before mixing in the chocolate.
The dough will be soft and a little sticky, pulling away from the sides of the bowl. Overmixing at this stage makes the cookies tough, so stop as soon as you see no dry pockets.
Step 4: Scoop, Chill, and Bake the Cookies
Scrape in the chocolate chips and fold just until they are distributed, about 10 seconds. Cover the bowl and chill the dough for at least 30 minutes, or up to 36 hours. While it chills, preheat the oven to 350°F (175°C) and line two baking sheets with parchment.
Scoop rounded 2-tablespoon portions of dough onto the sheets, leaving 3 inches between them. Bake one sheet at a time for 10 to 12 minutes, until the edges are set and golden and the centers still look slightly underdone. Let the cookies cool on the sheet for 5 minutes, then transfer to a rack. The tops will crackle and the chocolate will stay molten for a good half hour.
Tips for Chewy, Tangy Cookies
- Chilling overnight deepens the tang and the caramel notes. Scoop the dough balls first, then chill them on a plate so you can pop them straight onto the sheet when you are ready to bake.
- If you brown the butter, stir it until the milk solids turn deep golden and smell nutty. Scrape every speck into the bowl and let it cool until it feels just warm, not hot, before whisking in the sugars.
- Weigh your flour if you can. Too much flour makes the cookies puffy and dry instead of chewy and dense.
- Underbake by a minute. The cookies continue setting on the hot sheet, so pulling them when the centers still look a bit glossy guarantees a soft middle.
Bake times by scoop size:
| Scoop size | Bake time at 350°F |
|---|---|
| 1 tbsp (small) | 9–10 mins |
| 2 tbsp (standard) | 10–12 mins |
| 3 tbsp (large) | 12–14 mins |
Keeping Cookies Fresh
- Room temperature: store in an airtight container with a piece of bread to keep them soft for up to 4 days.
- Refrigerate: the dough can stay in the fridge for up to 3 days, tightly covered. Baked cookies also keep in the fridge for a week but taste best at room temp.
- Freeze: scoop dough balls onto a tray, freeze solid, then bag them. Bake straight from frozen, adding 1 to 2 minutes to the bake time.
Frequently Asked Questions
Can I use fed starter instead of discard?
Yes, fed starter works fine. The cookies might spread a little more since the structure is weaker, so chill the dough a full hour if it feels very slack.
Why did my cookies spread into flat puddles?
The butter was probably too hot when you mixed the dough, or the dough skipped the chill. Make sure the melted butter is just warm to the touch, and do not skip the 30-minute fridge rest.
Can I use bread flour for chewier cookies?
You can swap up to half the flour with bread flour. All bread flour makes the cookies a little tough and bready, so a 50/50 blend gives chew without losing tenderness.
My sourdough discard is really sour, will the cookies taste weird?
They will taste tangier and almost buttermilk-like, which a lot of people love. Stick with dark chocolate, which holds up to the extra acidity better than milk chocolate.
Sourdough Chocolate Chip Cookies Recipe
Ingredients
Method
- Whisk melted butter, brown sugar, granulated sugar, and salt in a large bowl for 1 minute until smooth.
- Add egg, vanilla, and sourdough discard and whisk 30 seconds until thick and uniform.
- Fold in flour and baking soda with a spatula until just combined, about 15 strokes.
- Fold in chocolate chips, cover, and chill dough at least 30 minutes. Preheat oven to 350°F (175°C).
- Scoop 2-tablespoon portions onto parchment-lined sheets. Bake one sheet at a time for 10–12 minutes until edges are golden and centers look slightly underdone. Cool on the sheet 5 minutes, then transfer to a rack.
