If you’re looking for cookies with crispy edges, chewy centers, rich chocolate, and a deep buttery flavor, sourdough chocolate chip cookies are an excellent choice. The sourdough discard doesn’t make the cookies taste sour; instead, it adds complexity, tenderness, and helps create a beautifully chewy texture. This recipe is perfect for using leftover sourdough discard that would otherwise go to waste.
Why Use Sourdough Discard?
Sourdough discard is the portion of sourdough starter that is removed before feeding it with fresh flour and water. Instead of throwing it away, it can be used in baking. In cookies, sourdough discard:
- Adds a subtle tangy flavor.
- Makes cookies softer and chewier.
- Enhances the buttery taste.
- Helps reduce food waste.
- Creates a richer overall flavor after resting.
Ingredients
Dry Ingredients
- 2½ cups (315 g) all-purpose flour
- 1 teaspoon baking soda
- ½ teaspoon baking powder
- 1 teaspoon salt
- ½ teaspoon cornstarch (optional, for extra softness)
Wet Ingredients
- ½ cup (113 g) unsalted butter, softened
- ½ cup (110 g) brown sugar
- ½ cup (100 g) granulated sugar
- ½ cup (120 g) sourdough discard (unfed, room temperature)
- 1 large egg
- 2 teaspoons vanilla extract
Mix-ins
- 1½ cups (255 g) semi-sweet chocolate chips
- ½ cup chopped dark chocolate (optional)
- Flaky sea salt for topping (optional)
Equipment Needed
- Large mixing bowl
- Medium bowl
- Measuring cups and spoons
- Electric mixer or whisk
- Rubber spatula
- Baking tray
- Parchment paper
- Cookie scoop or spoon
- Cooling rack
Step 1: Prepare the Ingredients
Remove the butter from the refrigerator about 30–60 minutes before baking so it becomes soft. Your egg and sourdough discard should also be close to room temperature. This helps everything mix together smoothly.
Measure all ingredients before beginning. Accurate measurements are important for the best cookie texture.
Step 2: Mix the Dry Ingredients
In a medium bowl combine:
- Flour
- Baking soda
- Baking powder
- Salt
- Cornstarch (if using)
Whisk until evenly mixed.
Set aside.
Step 3: Cream the Butter and Sugars
In a large mixing bowl, beat together:
- Softened butter
- Brown sugar
- White sugar
Mix for about 2–3 minutes until light and fluffy.
Creaming incorporates air into the dough, making the cookies lighter while still remaining chewy.
Step 4: Add Wet Ingredients
Add:
- Egg
- Vanilla extract
- Sourdough discard
Mix until smooth.
The batter may look slightly curdled at first because of the sourdough discard, but continue mixing until fully combined.
Step 5: Add Dry Ingredients
Gradually add the flour mixture to the wet mixture.
Mix only until no dry flour remains.
Do not overmix because overmixing develops gluten, making cookies tougher instead of soft.
Step 6: Fold in Chocolate
Using a spatula, gently fold in:
- Chocolate chips
- Chopped chocolate (if using)
Distribute the chocolate evenly throughout the dough.
Step 7: Chill the Dough
Cover the bowl with plastic wrap or a lid.
Refrigerate for:
- Minimum: 1 hour
- Better: Overnight
- Best flavor: 24 hours
Chilling allows:
- Flour to fully hydrate.
- Butter to firm up.
- Sourdough flavor to develop.
- Cookies to spread less during baking.
Skipping this step may result in flatter cookies.
Step 8: Preheat the Oven
Heat the oven to:
350°F (175°C)
Line baking trays with parchment paper.
Step 9: Scoop the Dough
Use a cookie scoop or spoon.
Each dough ball should be about:
2 tablespoons (45–50 g)
Place them about 2 inches apart because they spread while baking.
For bakery-style cookies, make the dough balls slightly taller instead of perfectly round.
Step 10: Bake
Bake for:
10–13 minutes
The edges should look lightly golden while the centers remain slightly soft.
Do not wait until the centers look fully baked. They will continue cooking from the residual heat after coming out of the oven.
Step 11: Add Extra Chocolate
Immediately after baking, gently press a few extra chocolate chips onto the tops of the cookies.
This gives them a professional bakery appearance.
If desired, sprinkle a little flaky sea salt over the warm cookies.
Step 12: Cool
Let cookies rest on the baking tray for about 5 minutes.
Transfer them to a cooling rack.
Cooling allows the cookies to finish setting without becoming dry.
Tips for the Best Cookies
- Use real butter instead of margarine.
- Brown sugar makes cookies chewier.
- Chill the dough for the best texture.
- Avoid overbaking.
- Use good-quality chocolate.
- Weigh ingredients if possible for consistent results.
- Don’t overmix the dough after adding flour.
- Add extra chocolate on top before baking for a prettier finish.
Storage
Room Temperature:
- Store in an airtight container for up to 5 days.
Refrigerator:
- Store for up to 1 week.
Freezer:
- Freeze baked cookies for up to 3 months.
Cookie Dough:
- Freeze dough balls and bake directly from frozen, adding 1–2 extra minutes to the baking time.
Variations
You can customize this recipe by adding:
- Chopped walnuts
- Pecans
- White chocolate chips
- Dark chocolate chunks
- Milk chocolate chips
- Toffee bits
- Dried cranberries
- Shredded coconut
- Espresso powder for a mocha flavor
- Cinnamon for a warm spice note
Common Mistakes to Avoid
- Using melted butter instead of softened butter.
- Not chilling the dough.
- Overmixing after adding flour.
- Overbaking the cookies.
- Measuring flour incorrectly.
- Placing dough balls too close together.
- Using an inactive or spoiled sourdough discard.
Frequently Asked Questions
Will the cookies taste sour?
No. The sourdough discard adds depth of flavor rather than a strong sour taste.
Can I use active sourdough starter?
Yes. Active starter also works, though discard is more commonly used.
Can I freeze the dough?
Yes. Scoop the dough into balls, freeze on a tray until solid, then transfer to a freezer bag.
Why are my cookies flat?
Possible reasons include warm butter, skipping the chilling step, or using too little flour.
Can I make these without chocolate chips?
Yes. You can substitute chopped chocolate, nuts, dried fruit, or other mix-ins.
Nutritional Information (Approximate, per cookie if making 24)
- Calories: 180–210
- Carbohydrates: 25 g
- Protein: 2.5 g
- Fat: 9 g
- Saturated Fat: 5 g
- Sugar: 15 g
- Fiber: 1 g
- Sodium: 120 mg
Final Notes
These sourdough chocolate chip cookies combine the classic comfort of homemade chocolate chip cookies with the added richness and subtle complexity of sourdough discard. Chilling the dough is the key to achieving thick, chewy cookies with crisp edges and gooey chocolate pockets. Whether you’re an experienced sourdough baker or simply looking for a delicious way to use extra starter, this recipe is reliable, easy to follow, and delivers bakery-style results every time.
