Chocolate Chip Cookie Bars

These Chocolate Chip Cookie Bars are everything you love about a classic chocolate chip cookie packed into a thick, chewy bar that slices into perfect squares. The edges become lightly crisp while the interior stays tender and cookie-like, with pockets of melted semi-sweet chocolate in every bite. You will notice a warm, buttery aroma as they bake, and a deep caramel note from the brown sugar that balances the chocolate. These bars are ideal for casual bake sales, potlucks, weeknight dessert cravings, or when you want an easy treat to share with friends. If you enjoy other handheld baked sweets, you might also like my take on cannoli cookie variations which pair well with a cup of coffee.

Ingredients

• 2 and 1/4 cups all-purpose flour, for structure and a tender crumb.
• 1 teaspoon baking soda, to give a gentle lift and help with browning.
• 1 and 1/2 teaspoons cornstarch, added for extra chew and a soft texture.
• 1/2 teaspoon salt, to enhance flavor and balance the sweetness.
• 3/4 cup unsalted butter, melted and slightly cooled, for rich butter flavor and a chewy crumb.
• 1 cup packed light brown sugar, provides moisture and caramel notes.
• 1/3 cup granulated sugar, helps with spread and crisping at the edges.
• 1 large egg, at room temperature, binds the dough and adds tenderness.
• 1 large egg yolk, at room temperature, adds richness and chewiness.
• 2 teaspoons pure vanilla extract, for warm, aromatic flavor.
• 1 cup semi-sweet chocolate chips, folded into the dough for melty chocolate pockets.
• Optional: sprinkle of flaky sea salt, added on top for contrast and a pretty finish.

Step-by-step Instructions

1. Preheat the oven to 350°F (177°C). Line a 9-inch square baking pan with parchment paper, leaving an overhang to lift the bars out easily after cooling.

2. In a large bowl, whisk together the flour, baking soda, cornstarch, and salt until evenly combined. Whisking first helps distribute the leavening so the texture is consistent.

3. In a medium bowl, whisk the melted butter, brown sugar, and granulated sugar until no lumps remain. Make sure the butter is only slightly cooled so it dissolves the sugars for a smooth mixture.

4. Add the egg, extra egg yolk, and vanilla extract to the sugar mixture and whisk until well combined. Mixing until smooth ensures an even texture and uniform color.

5. Combine the wet ingredients with the dry ingredients, mixing until just incorporated. Avoid overmixing to keep the bars tender.

6. Gently fold in the chocolate chips until evenly distributed. If you prefer more visible chocolate on top, reserve a tablespoon or two to press on the surface later.

7. Transfer the dough to the prepared baking pan and press it into an even layer. Press firmly to eliminate air pockets and ensure even baking.

8. If desired, sprinkle with flaky sea salt and press some additional chocolate chips on top for a pretty finish. The salt contrast highlights the sweetness.

9. Bake for 30 to 34 minutes, or until the top is lightly browned and a toothpick inserted near the center comes out mostly clean with a few moist crumbs. For chewier bars, err on the shorter end of the baking window.

10. Allow to cool in the pan for at least an hour before lifting out and cutting into squares. Cooling helps the bars set so they slice cleanly.

Recipe Details

• Prep Time: 15 minutes
• Cook Time: 30 to 34 minutes
• Total Time: about 2 hours, including 1 hour of cooling
• Servings: about 16 squares
• Calories: approximately 300 kcal per serving

Tips, Storage & Variations

• Tip: Use room temperature eggs so they incorporate easily into the warm sugar and butter mixture. If your butter is too hot it may cook the egg, so let it cool slightly after melting.
• Tip: For even baking, press the dough into the pan with an offset spatula and make sure the layer is uniform thickness.
• Storage: Store cooled bars in an airtight container at room temperature for up to 3 days. Separate layers with parchment paper to prevent sticking.
• Freezing: To freeze, wrap the whole slab tightly in plastic wrap and foil, or freeze individual squares in a single layer on a baking sheet, then transfer to a freezer bag. Freeze up to 3 months. Thaw at room temperature before serving.
• Variation: For a more pronounced salty-sweet contrast, add the optional flaky sea salt on top as soon as the bars come out of the oven.
• Variation: If you prefer more visible chocolate on each square, press a few extra chocolate chips to the surface before baking, as suggested in step 8.
• Variation: Adjust the bake time slightly to achieve a softer center or crisper edges without changing ingredient amounts.
• For other dessert ideas with a similar home-baked appeal, consider exploring this caramel apple cheesecake bars recipe for seasonal entertaining.

FAQ

1. Can I use salted butter instead of unsalted?
   Yes, you can. Reduce or omit the added salt if using salted butter to avoid over-salting.

2. Do I need to chill the dough before baking?
   No. This recipe bakes directly in the pan without chilling for a quick preparation.

3. How do I know when the bars are done?
   They are done when the top is lightly browned and a toothpick comes out mostly clean with a few moist crumbs.

4. Can I double the recipe for a larger pan?
   Yes, you can double and bake in a larger pan, but watch the baking time as it may require adjustments.

5. Will these bars be cakey or chewy?
   They are designed to be chewy with lightly crisp edges thanks to the cornstarch and the mix of brown and granulated sugars.

6. Is it okay to overbake slightly?
   Slight overbaking will make the edges firmer; remove promptly when the center is mostly set for the best texture.

People Also Ask

1. How do I keep cookie bars from becoming dry?
   Do not overmix and avoid baking past the recommended time. Cool in the pan to let them set.

2. Can I substitute chocolate chips with chopped chocolate?
   Yes, chopped chocolate works and will create larger pools of melted chocolate.

3. What pan is best for even baking?
   A 9-inch square metal baking pan provides even heat; glass pans may require a slightly longer bake time.

4. Why is cornstarch used in cookie bars?
   Cornstarch helps create a soft, tender crumb and contributes to a chewier texture.

5. Can these be made ahead for a party?
   Yes, bake the day before and store in an airtight container at room temperature.

6. How should I cut the bars for neat squares?
   Chill the baked slab slightly or use a sharp knife warmed under hot water and wiped dry between cuts.

7. Are these bars freezer friendly?
   Yes, freeze whole or cut pieces well wrapped for up to 3 months.

Conclusion

These Chocolate Chip Cookie Bars are a simple, crowd-pleasing dessert that delivers rich butter flavor, chewy texture, and melty chocolate in every square. They are easy to prepare and travel well for gatherings or school lunches. For inspiration on other soft bar-style cookies, see this take on Soft Chocolate Chip Cookie Bars – Preppy Kitchen, and for a classic, well-loved approach try the version at Chocolate Chip Cookie Bars – Our Best Bites. I hope you give this recipe a try and share how your batch turns out, warm and cozy from the oven.