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Brown Butter Chocolate Chip Cookie Bars

brown butter chocolate chip cookie bars - featured image

These easy, chewy cookie bars feature rich brown butter and gooey chocolate chips in every bite. Perfect for bake sales, parties, or a comforting treat, they come together quickly with pantry staples and no chilling required.

Ingredients

Scale
  • 1 cup (226g) unsalted butter, browned
  • 1 1/4 cups (250g) packed brown sugar
  • 1/2 cup (100g) granulated sugar
  • 2 large eggs, room temperature
  • 2 teaspoons vanilla extract
  • 2 1/4 cups (280g) all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 1/2 cups (255g) semi-sweet chocolate chips (plus extra for topping)
  • Flaky sea salt, optional, for topping

Instructions

  1. Add butter to a medium saucepan over medium heat. Melt, then cook, swirling occasionally, until it foams and turns golden brown (5-7 minutes). Pour brown butter (including brown bits) into a large mixing bowl and let cool for 10-15 minutes.
  2. Preheat oven to 350°F (175°C). Line a 9×13-inch pan with parchment paper, leaving an overhang for easy lifting.
  3. To the cooled brown butter, add brown sugar and granulated sugar. Whisk until smooth and glossy. Add eggs one at a time, whisking well after each. Stir in vanilla extract.
  4. In a separate bowl, whisk together flour, baking soda, and salt.
  5. Gently fold dry ingredients into wet mixture using a spatula. Stop as soon as you don’t see streaks of flour.
  6. Fold in chocolate chips, reserving a handful for topping if desired.
  7. Press dough evenly into prepared pan. Sprinkle reserved chocolate chips and flaky sea salt on top, if using.
  8. Bake for 22-28 minutes, until edges are golden and a toothpick in the center comes out with a few moist crumbs. Do not overbake.
  9. Cool in pan for at least 30 minutes. Use parchment to lift out, then cut into 16-24 bars.

Notes

Let brown butter cool before adding eggs to avoid scrambling. For extra gooey bars, slightly underbake. Use European-style butter for richer flavor. Adapt with gluten-free flour or dairy-free butter as needed. Bars store well at room temperature for 4 days, or freeze up to 2 months.

Nutrition

Keywords: brown butter, chocolate chip, cookie bars, chewy dessert, easy baking, potluck, bake sale, comfort food