Sourdough Chocolate Chip Cookie Bars

Sourdough Chocolate Chip Cookie Bars – Soft, Chewy & Easy One-Pan Dessert

These Sourdough Chocolate Chip Cookie Bars are rich, buttery, soft in the center, and loaded with gooey chocolate chips in every bite. They combine the comforting flavor of classic chocolate chip cookies with the subtle tangy depth of sourdough discard, creating a bakery-style dessert that’s incredibly easy to make at home.

Unlike traditional cookies, this recipe is baked in a single pan, making it faster, simpler, and perfect for sharing. Whether you are looking for a creative way to use extra sourdough discard or simply craving a warm homemade dessert, these cookie bars are guaranteed to become a family favorite.

Why You’ll Love These Cookie Bars

A Delicious Way to Use Sourdough Discard

Instead of throwing away leftover starter, transform it into a rich and chewy dessert.

Easy One-Pan Recipe

No rolling or scooping cookie dough. Simply spread the dough into a pan and bake.

Perfect Texture

These bars stay soft and chewy in the center while developing lightly crisp golden edges.

Loaded with Chocolate

Every square is packed with melted chocolate chips for the ultimate sweet bite.

Great for Sharing

Easy to slice, transport, and serve for parties, lunchboxes, holidays, or family gatherings.

Ingredients You’ll Need

Main Ingredients

  • ½ cup unsalted butter, melted
  • ¾ cup brown sugar
  • ¼ cup granulated sugar
  • ½ cup sourdough discard
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1½ cups all-purpose flour
  • ½ teaspoon baking soda
  • ½ teaspoon salt
  • 1 cup chocolate chips
  • ¼ cup chopped walnuts (optional)

Optional Toppings

  • Extra chocolate chips
  • Flaky sea salt
  • Chocolate drizzle

Step-by-Step Instructions

Step 1: Prepare the Baking Pan

Preheat your oven to 350°F (175°C).

Line an 8×8-inch baking pan with parchment paper for easy removal.

Step 2: Mix Butter and Sugars

In a large mixing bowl, whisk together:

  • Melted butter
  • Brown sugar
  • Granulated sugar

Mix until smooth, glossy, and creamy.

Step 3: Add the Wet Ingredients

Add:

  • Sourdough discard
  • Egg
  • Vanilla extract

Whisk until fully combined.

The sourdough discard adds subtle tanginess and extra chewiness to the bars.

Step 4: Combine the Dry Ingredients

In a separate bowl, mix together:

  • Flour
  • Baking soda
  • Salt

Gradually add the dry ingredients to the wet mixture.

Stir gently until a thick cookie dough forms.

Step 5: Fold in Chocolate Chips

Add:

  • Chocolate chips
  • Chopped walnuts (optional)

Fold everything together carefully until evenly distributed.

Step 6: Spread the Dough

Transfer the dough into the prepared baking pan.

Use a spatula to spread it evenly into the corners.

For a bakery-style appearance, sprinkle extra chocolate chips on top.

Step 7: Bake the Cookie Bars

Bake for 20–25 minutes until:

  • The edges turn golden brown
  • The center looks just set

Do not overbake if you want soft and gooey bars.

Step 8: Cool and Slice

Allow the cookie bars to cool in the pan for about 20 minutes.

Lift them out using the parchment paper and cut into squares or rectangles.

Serve warm or at room temperature.

Expert Tips for the Best Cookie Bars

Avoid Overmixing

Overmixing can make the bars dense instead of soft and tender.

Use Quality Chocolate

Premium chocolate chips create richer flavor and smoother texture.

Chill the Dough for Thicker Bars

Refrigerating the dough for 30 minutes enhances flavor and texture.

Add Caramel Pieces

For extra sweetness and gooeyness, mix in caramel chunks.

Experiment with Nuts

Walnuts, pecans, almonds, or hazelnuts all pair beautifully with chocolate.

Why Sourdough Discard Makes These Better

Sourdough discard adds:

  • A slight tangy depth of flavor
  • Improved texture and chewiness
  • Moisture that keeps the bars soft longer

It also helps reduce food waste by giving unused starter a delicious purpose.

Serving Suggestions

These cookie bars are delicious served:

  • With cold milk
  • Alongside coffee or tea
  • As an after-dinner dessert
  • In lunchboxes or snack trays

For an extra indulgent dessert, serve warm cookie bars with:

  • Vanilla ice cream
  • Chocolate syrup
  • Powdered sugar
  • Caramel drizzle

Storage Tips

Room Temperature

Store in an airtight container for up to 4 days.

Refrigerator

Keep refrigerated for up to 1 week for longer freshness.

Freezer

Freeze sliced cookie bars for up to 2 months.

Warm slightly before serving for the best texture.

Healthier Homemade Treat

While still a dessert, these homemade cookie bars offer a few advantages:

  • Uses homemade ingredients
  • Reduces sourdough discard waste
  • No preservatives or artificial ingredients
  • Easier portion control compared to large bakery desserts

Final Thoughts

These Sourdough Chocolate Chip Cookie Bars are soft, buttery, chewy, and packed with melted chocolate in every bite. The addition of sourdough discard creates a unique bakery-style flavor that takes classic cookie bars to the next level.

Simple to make and perfect for sharing, this easy one-pan dessert is a must-try recipe for anyone who loves homemade baked treats.

Author Card
Author

Founder / Chef / Everyone’s Best Friend

Emma Laurent

Cooking has been part of my daily life for years, and I enjoy sharing easy keto, sourdough, and high-protein recipes that anyone can make at home.