Chocolate Chip Cookie Bars
These thick, chewy chocolate chip cookie bars are packed with brown butter depth and pools of dark chocolate, baked to golden perfection in a single pan.
- Melted brown butter adds a rich, nutty depth that elevates the chocolate flavor.
- A higher ratio of brown sugar to white sugar ensures an ultra-chewy, fudgy center.
- Baking in a single pan eliminates the tedious scooping and multiple baking sheets.
I still remember the humid July afternoon when my cheap aluminum baking pan warped with a loud, metallic pop inside my 350-degree oven, sending half-baked cookie dough sliding into a lopsided heap. I was trying to bake a double batch of cookies for a block party, but my patience had run thin after scooping the third tray.
I wanted the cookies, but I absolutely hated the tedious scooping.
Think about this in terms of physics: standard cookie dough relies on rapid moisture loss from individual mounds to create chewy edges. Spreading that same dough into a solid sheet traps steam, over-activating the gluten and turning your bars into dry, cakey blocks.
The simple fix is adjusting the fat and sugar ratio to guarantee a fudgy center. By melting the butter instead of creaming it, we prevent excess air from entering the batter, which keeps the protein matrix tight and wonderfully dense. If you love this style of easy baking, you should also try my Strawberry Sugar Cookie Bars That Will Blow Your Mind or these colorful Springtime Funfetti Blondies Recipe. I tested this with six different pans, and hands down, a metal pan lined with parchment paper yields the most even heat distribution.
Trust me on this one.
Chocolate Chip Cookie Bars
Ingredients
- 1 cup (226g) unsalted butter, melted and cooled slightly
- 1 cup (200g) packed dark brown sugar
- 1/2 cup (100g) granulated sugar
- 2 large eggs, room temperature
- 2 tsp vanilla extract
- 2 1/4 cups (270g) all-purpose flour
- 1 tsp baking soda
- 1 tsp Diamond Crystal kosher salt
- 1 1/2 cups (250g) semi-sweet chocolate chips or chopped chocolate chunks
- Flaky sea salt, for sprinkling
Directions
- Preheat your oven to 350°F (175°C). Line a 9x13-inch metal baking pan with parchment paper, leaving an overhang on the sides for easy removal.
- In a large bowl, whisk together the melted unsalted butter, dark brown sugar, and granulated sugar until smooth and no lumps remain.
- Add the room-temperature eggs one at a time, whisking vigorously after each addition, then stir in the vanilla extract until the mixture is glossy.
- Fold in the all-purpose flour, baking soda, and Diamond Crystal kosher salt using a rubber spatula just until a few flour streaks remain.
- Gently fold in the chocolate chips, making sure not to overmix the dough, which can make the bars tough.
- Transfer the dough to the prepared pan and press it evenly into the corners using your palms.
- Bake for 22 to 25 minutes, or until the edges are golden brown and a toothpick inserted into the center comes out with a few moist crumbs.
- Sprinkle with flaky sea salt immediately upon pulling the pan from the oven, then let cool completely in the pan before slicing.
Notes
- Always use Diamond Crystal kosher salt; if you are using fine table salt instead, reduce the amount by half (to 1/2 teaspoon) to keep the bars from tasting overly salty.
- Melting the butter instead of creaming it prevents air from being trapped in the fat, which limits gluten development and ensures a dense, chewy texture rather than a cakey one.
- Watch your oven closely around the 22-minute mark; overbaking by even two minutes will dry out the center, turning your fudgy bars into dry bricks.
- These bars actually improve after a day in an airtight container, as the moisture redistributes and the starches gelatinize fully, making them even chewier.
- Cheap glass baking dishes failed every single test because they retain too much thermal mass, overcooking the edges while leaving the center raw.
- If you want a completely oven-free alternative for hot summer days, check out my No Bake Peanut Butter Bars.
Serving Suggestions
Serve these bars warm for the ultimate gooey experience, or let them cool completely for clean, sharp slices.
- Top a warm bar with a generous scoop of vanilla bean ice cream.
- Drizzle with warm caramel sauce or a spoonful of homemade hot fudge.
- Pair with a cold glass of milk or a hot espresso to balance the sweetness.
- Cut them into tiny bite-sized squares for an easy addition to a party dessert platter.
- Serve them alongside a warm skillet of S'mores Dip for the ultimate dessert spread.
Storage and Reheating
Keep these bars in an airtight container at room temperature.
They will stay incredibly soft and chewy for up to four days, though they rarely last that long. If you want to keep them longer, wrap individual squares tightly in plastic wrap and freeze them in a zip-top bag for up to three months.
To reheat, simply pop a bar into the microwave for 10 to 15 seconds. This brief burst of heat melts the chocolate pools and revives the buttery, fresh-baked texture perfectly.
Ingredient Substitutes
If you find yourself missing an ingredient, these simple swaps will keep your baking session on track without ruining the texture.
- Dark Brown Sugar: Use light brown sugar instead, though the bars will have a slightly milder caramel flavor.
- Chocolate Chips: Swap in butterscotch chips, peanut butter chips, or chopped nuts for a fun flavor twist.
- Unsalted Butter: Use salted butter, but reduce the added kosher salt in the recipe by half.
I hope these bars bring as much joy to your kitchen as they do to mine, saving you from the endless cycle of cookie-scooping fatigue. Let me know how yours turn out, and don't forget to sprinkle that flaky salt on top!
Susan Rosalind
I've been developing recipes for about 12 years, and this one went through the same routine as everything else here: I made it, changed something, made it again, then had someone else cook it from just the written steps to see where it tripped them up. That's the part I care about most – not just that a recipe works for me, but that it works on a Tuesday night in your kitchen too.
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