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    Home ยป Recipes ยป Bars & Brownies

    Brookies

    March 29, 2019 Updated January 6, 2023 BySam 66 Comments

    This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases. Please read my disclosure policy.
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    collage of brookies, top image image of single bar, bottom image of pan filled with cut brookies in pan

    Brookies are a fun combination of chocolate chip cookie bars and brownies, all swirled together in one pan! This recipe yields cookie bars that are chewy, fudgy, and totally irresistible!

    closeup of brookies cut into squares in baking dish

    The Perfect Combo Cookie Bar

    These fun, swirled brookies combine the best of both worlds. A hybrid of my chocolate chip cookie bars and fudgy homemade brownies, they’re peppered with plenty of chocolate chips and guaranteed to satisfy any sweet tooth.

    While you are going to dirty a few mixing bowls because you have to prepare the cookie batter and brownie batter separately, it’s really easy work with no mixer needed, no chilling required, and only one baking dish.

    Let’s get started!

    Ingredients (an Overview)

    Ingredients needed to make brookie batter

    There’s a fair bit of ingredient overlap between the two recipes, so it’s helpful to go over the full ingredient list before you begin measuring things out, that way you can get your ingredients ready for both batters at the same time.

    • Butter. It’ll be little surprise to you that both batters for the brookies need butter (say that 5 times fast). I like to use unsalted butter to best control the flavor, but if you only happen to have salted on hand you can reduce the amount of salt called for in the recipe (I’d reduce the salt to ยผ teaspoon in each batter).
    • Eggs. Another ingredient overlap, you’ll need eggs and egg yolks for both batters. I recommend room temperature eggs in order to help the batters come together nicely. If you forgot to set out your eggs in advance, I have a post on how to quickly bring eggs to room temperature that would be helpful.
    • Chocolate chips. The cookie bars batter demands classic semisweet chips, of course, but I like to add some mini chips to the brownie batter as well. Can’t have too much chocolate!

    SAM’S TIP: If you’re out of brown sugar but do happen to have some molasses on hand, see my post on how to easily make brown sugar at home!

    This is just an overview of some of the ingredients I used and why. For the full recipe please scroll down to the bottom of the post!

    How to Make Brookies

    brownie batter and chocolate chip cookie batter dolloped into pan
    brownie batter and chocolate chip cookie batter swirled together in baking dish
    • Prepare the batters. Each batter must be prepared separately in its own bowl before you can combine them. Don’t worry, they’re both simple recipes and you don’t even need an electric mixer.
    • Combine. Alternate dolloping the different batters over the baking dish. A pair of spoons or a cookie scoop or ice cream scoop with a lever would be great for this.
    • Swirl. Use a knife to swirl the batters gently together. While you’re doing this, try to make sure the batter is in an even layer, that way it bakes evenly.
    • Bake & enjoy. Bake until a toothpick inserted in the center comes out clean. Let the brownies cool completely before cutting into them, or, if you don’t mind things a bit messy, dig right in and serve with vanilla ice cream!

    SAM’S TIP: Don’t over-bake your brookies or they’ll be dry and crumbly instead of moist and fudgy! Always check at the 35 minute mark and note that if you choose a dark metal pan for baking, yours will likely be done closer to this timepoint than 40 minutes.

    Overhead of freshly baked cookie/brownie bars in glass dish

    Frequently Asked Questions

    Can I make the batter in advance?

    Yes! You can make both batters, swirl them in the pan, cover tightly, and refrigerate for up to 2-3 days before baking. If baking directly from the refrigerator, you may notice that you’ll need a few minutes longer in the oven (but always check at the indicated time, you don’t want to over-bake or they’ll be dry and crumbly!).

    How can I tell if they are finished baking?

    As with most of my cookie bars, I recommend the toothpick test. Simply insert a toothpick in the center. It should come out clean or with a few moist, fudgy crumbs (no wet batter). If your toothpick comes out covered in chocolate, you may have just struck a chocolate chip, so just try again with a new toothpick.

    Can I add nuts to this recipe?

    Absolutely! 1 cup of nuts is a great addition to the recipe, and I recommend walnuts (though toasted pecans are also a great add-in). I include instructions in the notes of the recipe on exactly how to add them.

    brookie bar on a piece of parchment paper, surrounded by chocolate chips

    If you’re looking for more fun cookie/brownie bar recipes, try my dirty brownies or cosmic brownies!

    Enjoy!

    Let’s bake together! I’ll be walking you through all the steps in my written recipe and video below! If you try this recipe, be sure to tag me on Instagram, and you can also find me on YouTube and Facebook

    brookies baked into a glass dish

    Brookies

    Brookies are a fun combination of chocolate chip cookie bars and brownies, all swirled together in one pan! They're loaded with chocolate chips and are perfectly chewy and fudgy. Recipe includes a how-to video.
    5 from 22 votes
    Print Pin Rate
    Prevent your screen from going dark
    Course: brownies, cookie, Dessert
    Cuisine: American
    Prep Time: 30 minutes minutes
    Cook Time: 35 minutes minutes
    Total Time: 1 hour hour 5 minutes minutes
    Servings: 20 pieces
    Calories: 406kcal
    Author: Sam Merritt

    Ingredients

    COOKIE DOUGH

    • ¾ cup (170 g) unsalted butter melted and cooled at least 10-15 minutes (see note)
    • ⅔ cup (135 g) tightly packed brown sugar light or dark
    • ¼ cup (50 g) white sugar
    • 1 egg + 1 egg yolk room temperature preferred
    • 1 teaspoon vanilla extract
    • 2 cups (250 g) all-purpose flour
    • 1 teaspoon cornstarch
    • ¼ teaspoon baking powder
    • ¾ teaspoon salt
    • 1 cup (170 g) semisweet chocolate chips

    BROWNIE BATTER

    • ¾ cup (170 g) unsalted butter cut into Tbsp-sized pieces
    • ½ cup (90 g) semisweet chocolate chips
    • ½ cup (50 g) natural cocoa powder
    • ½ cup (100 g) sugar
    • 1 cup (200 g) light brown sugar firmly packed
    • 2 large eggs + 1 egg yolk room temperature preferred
    • 1 teaspoon vanilla extract
    • ½ teaspoon salt
    • 1 cup (125 g) all-purpose flour
    • ½ cup (150 g) mini chocolate chips optional

    Recommended Equipment

    • 9×13 baking dish
    • Mixing bowls

    Instructions

    • Preheat oven to 350F (175C) and lightly grease and flour sides and bottom of a 13×9 baking dish (or spray with baking spray). Set aside.

    COOKIE DOUGH

    • Combine melted, cooled butter and sugars in a large bowl and stir well. Add egg, egg yolk, and vanilla extract and stir again to combine. Set aside.
      ¾ cup (170 g) unsalted butter, ⅔ cup (135 g) tightly packed brown sugar, ¼ cup (50 g) white sugar, 1 egg + 1 egg yolk, 1 teaspoon vanilla extract
    • In a separate bowl, whisk together flour, cornstarch, baking powder, and salt.
      2 cups (250 g) all-purpose flour, 1 teaspoon cornstarch, ¼ teaspoon baking powder, ¾ teaspoon salt
    • Add dry ingredients to wet and stir until completely combined. Stir in chocolate chips. Set aside and prepare your Brownie batter.
      1 cup (170 g) semisweet chocolate chips

    BROWNIE BATTER

    • Combine butter pieces and ½ cup chocolate chips in a large heat-proof bowl. Transfer to microwave and heat in 20-second intervals, stirring very well in between until chocolate and butter are completely melted and mixture is smooth.
      ¾ cup (170 g) unsalted butter, ½ cup (90 g) semisweet chocolate chips
    • Add cocoa powder and stir well.
      ½ cup (50 g) natural cocoa powder
    • Stir in sugars.
      ½ cup (100 g) sugar, 1 cup (200 g) light brown sugar
    • Add eggs, egg yolk, vanilla extract, and salt and stir to combine.
      2 large eggs + 1 egg yolk, 1 teaspoon vanilla extract, ½ teaspoon salt
    • Add flour and stir until well mixed. If desired, stir in mini chocolate chips.
      1 cup (125 g) all-purpose flour, ½ cup (150 g) mini chocolate chips

    ASSEMBLY

    • Alternate dolloping large spoonfuls of cookie dough and brownie batter into baking dish. Use a knife to swirl through both doughs and make sure the batter is in an even layer.
    • Transfer to 350F (175C) oven and bake for 35-40 minutes or until a toothpick inserted in the center comes out with a few moist crumbs or clean (make sure you’re not sticking the toothpick into a chocolate chip!). Take care to not over-bake your brookies or they will be dry and crumbly once cooled.
    • Allow to cool and slice and serve. Enjoy!

    Notes

    Butter

    The butter should not feel too warm to the touch or it will melt your sugars.

    Add-Ins

    Feel free to substitute the chocolate chips for white chocolate chips, or add up to a heaping cup of your favorite nuts into the batter (I add a half cup into each batter before combining the two). Chopped walnuts work especially great here!

    Storing

    Store in an airtight container at room temperature for up to 5 days. Brookies may also be tightly wrapped and frozen for up to 3 months.
     

    Nutrition

    Serving: 1piece | Calories: 406kcal | Carbohydrates: 51g | Protein: 4g | Fat: 21g | Saturated Fat: 13g | Trans Fat: 1g | Cholesterol: 63mg | Sodium: 167mg | Potassium: 173mg | Fiber: 2g | Sugar: 33g | Vitamin A: 478IU | Vitamin C: 1mg | Calcium: 45mg | Iron: 2mg

    Nutritional information is based on third-party calculations and should be considered an estimate only. Actual nutritional content will vary based upon brands used, measuring methods, cooking method, portion sizes, and more.

    Tried this recipe? Show me on Instagram!Mention @SugarSpun_Sam or tag #sugarspunrun!

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    Reader Interactions

    Comments

    1. Tracy

      May 09, 2025 at 10:11 pm

      5 stars
      Pretty easy and a perfect cookie and brownie combo! I used a parchment paper sling instead of greasing and it worked really well.

      Reply
      • Sam

        May 11, 2025 at 9:59 pm

        I’m so glad you enjoyed them so much, Tracy! I love using parchment. It makes it so easy to transfer and clean. ๐Ÿ™‚

        Reply
    2. Matthew Cox

      April 09, 2025 at 5:26 pm

      5 stars
      Thanks to the SSR team, life has balance once again. This recipe is the perfect blend of the best of both worlds with a texture to match. In a lesser recipe, people would be angling for the slice that has more brownie, or more cookie. Not here! You win no matter which slice you get. This is one where I just watch picky kids take a bite, stop in their tracks, and then come back for more and more. Next time the swim team asks you for a bake sale, take this one out.

      Reply
      • Sam

        April 10, 2025 at 12:59 pm

        I love the combination in these. So much goodness in every bite. ๐Ÿ™‚

        Reply
    3. Debbie

      February 21, 2025 at 10:50 am

      5 stars
      Just got my second batch of these in the oven and they’re absolutely wonderful, one of the best recipes I’ve ever used. I am in England and this is the first I’ve ever heard of Brookies. So glad I found them. Thank you so much!

      Reply
      • Sam

        February 21, 2025 at 1:11 pm

        I’m so glad you enjoy them so much, Debbie! ๐Ÿ™‚

        Reply
    4. Amy W

      February 11, 2024 at 12:19 am

      5 stars
      Outstanding brookie recipe! The only addition I made was replacing some of the chocolate chips with mini m&ms (kidsโ€™ party). They take time to make but I had everything measured out while the melted butter was cooling and it went fast. I did have to seal them up so they would safely make it through the night! ๐Ÿ˜‰

      Reply
      • Sam

        February 11, 2024 at 9:25 pm

        I’m so glad everyone enjoyed them so much, Amy! ๐Ÿ™‚

        Reply
      • Ah

        March 29, 2025 at 10:35 pm

        5 stars
        absolutely dreamy. made these with my gals and they were so easy to make and we’re so so tasty! brownie turned out so delicious and gooey but the cookie seemed a little dry. still a 10/10๐Ÿ˜‹๐Ÿซถ

        Reply
    5. Taylor Ackerman

      December 02, 2023 at 7:58 pm

      5 stars
      These are so good! I have made them so many times now…more than I care to admit!

      Reply
      • Sam

        December 03, 2023 at 11:19 am

        I’m so glad you enjoy them so much, Taylor! ๐Ÿ™‚

        Reply
    6. Arvinder

      January 13, 2023 at 4:47 am

      Is there any eggless recipe for the brookies too? I have made these brookies following your recipes so many times and everytime they have turned out awesome! Was wondering if there is an eggless version of it. Thanks a tonne โค๏ธ

      Reply
      • Sam

        January 16, 2023 at 9:23 pm

        Unfortunately I don’t have an eggless version and I haven’t tried any substitutes to know how they would work. ๐Ÿ™

        Reply
    7. Hina

      February 04, 2022 at 10:25 pm

      Hello Sam! This recipe was truly perfect. The only imperfection is the fact that it has sugar which is not good for any of us. But really? Thank you for the excellent recipe which i followed to to the T, and it did turn out perfectly. Baking time was exact 30 min and the tooth pick came out slightly wet with the mixture during testing. I I think that is an imp.rule to follow.

      Reply
      • Sam

        February 08, 2022 at 10:04 am

        I’m so glad you enjoyed it, Hina! A little treat for yourself every now and then isn’t a bad thing. ๐Ÿ˜‰

        Reply
    8. Lauren

      January 12, 2022 at 7:43 pm

      Can either the cookie or brownie dough be made in advance and refrigerated the night before?

      Reply
      • Sam

        February 01, 2022 at 11:30 am

        Hi Lauren! You shouldn’t have any issues making both of them in advance. Just make sure it stays wrapped tightly so it doesn’t dry out. ๐Ÿ™‚

        Reply
    9. Katie

      July 25, 2021 at 11:05 am

      5 stars
      So delicious! Bringing them to a party in a couple hours and I know they will be a big hit! I had to bake mine for 45-47 minutes so a bit longer than the recipe calls for but they turned out great! I highly recommend making these.

      Reply
      • Sam

        July 25, 2021 at 9:32 pm

        I’m so glad you enjoy them so much, Katie! ๐Ÿ™‚

        Reply
    10. Someone

      July 14, 2021 at 3:45 am

      Can I substitute chocolate chips with cooking chocolate chunks?

      Reply
      • Sam

        July 16, 2021 at 2:35 pm

        That should work fine here. ๐Ÿ™‚

        Reply
    11. Zoie Penick

      June 20, 2021 at 12:40 pm

      5 stars
      Hi Sam! My sister and I made this recipe today for our dad, for Fatherโ€™s Day. He loved it! So did we! Our family loved it as well. We served it with vanilla ice cream, whipped cream, and chocolate syrup. Thanks for the recipe Sam!!! ๐Ÿ™‚

      Reply
      • Sam

        June 21, 2021 at 9:22 pm

        I’m so glad everyone enjoyed them so much, Zoie! I love the idea of serving them with ice cream and toppings! ๐Ÿ™‚

        Reply
      • Matthew

        June 21, 2021 at 9:29 pm

        5 stars
        Zoie Sam is the best am I right!?

        Reply
    12. Kayla

      May 13, 2021 at 5:12 pm

      Hi! These look so good! Is there a way that you could bake them layered? I want to make them with Oreos in between, so cookies, then Oreos, then brownies. Do you think it would bake evenly? Thanks!

      Reply
      • Sam

        May 13, 2021 at 10:58 pm

        Hi Kayla! I haven’t tried baking them this way. I think they will still bake evenly. Let me know how it goes if you try it. ๐Ÿ™‚

        Reply
        • Kayla

          May 22, 2021 at 12:33 pm

          5 stars
          Hi! I made these with the Oreos in the middle. I pressed the cookie dough into an even layer, put the Oreos on top (I put 20) and then spread the brownie batter over that. It baked up great! They were so so good and everyone loved them. (Not that Iโ€™m surprised, all of your recipes are delicious. Thank you!

        • Sam

          May 23, 2021 at 10:09 pm

          I’m so glad everyone enjoyed them so much, Kayla! ๐Ÿ™‚

    13. Isaacb

      February 08, 2021 at 7:55 pm

      Hi! Can I use brownie mix and if so how much should I use?

      Reply
      • Sam

        February 08, 2021 at 9:04 pm

        Unfortunately I haven’t tried it so I wouldn’t be able to advise on how much you would need.

        Reply
    14. Someone

      December 20, 2020 at 2:37 pm

      Hi! Would I be able to bake these brookies in ramekins? If so, how long do you think they will have to bake?

      Reply
      • Sam

        December 20, 2020 at 9:47 pm

        They should bake in a ramekin but I’m not sure how long it would take.

        Reply
        • Bill

          December 20, 2020 at 9:49 pm

          5 stars
          What is a ramekin?

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    The author (Sam) in blue shirt holding donut Hi, I'm Sam! I'm dedicated to bringing you sweet, simple, and from-scratch dessert recipes. My life may or may not be controlled by my sweet tooth. Send help (or chocolate). Read more about me.

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