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Close-up of gooey brookie bars swirled with brownie and cookie layers, topped with crushed Oreo pieces, served on a white plate.

It’s Brookie O’Clock: Gooey Brownie-Cookie Bars


  • Author: Eva Harper
  • Total Time: 50 minutes
  • Yield: 16 bars 1x

Description

It’s brookie o’clock! These gooey brownie-cookie bars are the ultimate dessert mash-up—chewy, fudgy, and loaded with chocolate. Perfect for indecisive sweet tooths.


Ingredients

Scale

For the Brownie Layer

  • ½ cup browned butter

  • 1 cup granulated sugar

  • 2 large eggs, room temperature

  • 1 tablespoon vanilla extract

  • ⅓ cup cocoa powder

  • ¾ cup all-purpose flour

  • ½ teaspoon baking powder

  • Pinch of salt

  • 1 cup chocolate chips

For the Cookie Layer

  • ½ cup browned butter

  • ⅓ cup granulated sugar

  • ½ cup brown sugar

  • 1 large egg, room temperature

  • 2 tablespoons vanilla extract

  • 1¼ cups all-purpose flour

  • ½ teaspoon baking soda

  • Pinch of salt

  • 1 cup chocolate chips

Optional Add-In

  • 1520 Oreos, crushed or halved


Instructions

 

  1. Brown the Butter – Prepare two batches of browned butter (one per batter) and let cool slightly.

  2. Mix Brownie Batter – Whisk browned butter and sugar. Add eggs, vanilla, then dry ingredients and chocolate chips.

  3. Mix Cookie Dough – Combine browned butter and sugars, add egg and vanilla, then stir in dry ingredients and chips. Chill for 10–15 mins.

  4. Layer in Pan – In a parchment-lined 9×9 pan, spread brownie batter, top with cookie dough dollops, swirl gently.

  5. Bake – 350°F for 28–32 mins, until center is slightly jiggly and edges are puffed.

  6. Cool and Slice – Let cool for 15–20 mins, then lift and slice.

Notes

Eva’s Tip: Don’t overbake! The center should look slightly underdone—it sets up perfectly as it cools. Bonus points if you tuck Oreos or a spoonful of Nutella in the middle layer.

  • Prep Time: 20 minutes
  • Cook Time: 30 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 bar
  • Calories: 310
  • Sugar: 24g
  • Sodium: 140mg
  • Fat: 16g
  • Saturated Fat: 9g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 39g
  • Fiber: 2g
  • Protein: 3g
  • Cholesterol: 45mg

Keywords: it’s brookie o’clock, brookie recipe, gooey brookies, brownie cookie bars, brookie dessert