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    Home » Brownies and Bars

    Aug 22, 2021 by Stephanie Rutherford · This post may contain affiliate links · This blog generates income via ads

    Brown Butter Brookie Bars

    666 shares
    Jump to Recipe Print Recipe
    Pinterest pin for brown butter brookie bars.

    These brown butter brookie bars are a combination of chocolate chip cookies and fudgy brownies. They have a layer of fudgy brownie with brown butter chocolate chip cookies on top. The brown butter helps to give the bars a gourmet flavor and it reduces the sweetness.

    Brown butter brookie bars on a marble board.

    These brown butter brookie bars are the combination of the two best desserts! Chocolate chip cookies and brownies.

    Normally these would be very sweet, however I added extra salt to the chocolate chip cookie dough. Also, the brown butter nuttiness also reduces the sweetness.

    If you are looking for more brown butter recipes, try brown butter chocolate chip cookies, brown butter carrot cake, and Oreo blondies.

    Jump to:
    • Why You Will Love This
    • Ingredients
    • Step By Step Instructions
    • Baking Tips
    • FAQ
    • Storing and Freezing
    • 📖 Recipe

    Why You Will Love This

    • Easy to make!- This recipe is super easy to make. The brownie batter and cookie dough is very quick to make.
    • Fudgy brownies- These brownies are ultra fudgy and have both cocoa powder and chocolate chips.
    • Brown butter chocolate chip cookies- The brown butter makes the cookie layer taste gourmet.
    Brookies on a parchment sheet.

    Ingredients

    Here are notes about the ingredients used.

    • Egg yolk- The egg yolk is needed to give the brownies an extra fudgy texture.
    • Oil- Use canola, vegetable, or olive oil.
    • Dutch process cocoa powder- This is the one I used. Dutch process cocoa powder gives the brownies a richer chocolate flavor.
    • Cornstarch- The cornstarch helps to break down the gluten slightly. This helps to give the brownies a fudgier texture.
    • Chocolate chips- Use semi-sweet or dark chocolate chips. Don't use milk chocolate chips.
    • Browned butter- This is the process where the butter is browned until the milk deposits separate. The milk deposits are where the flavor lies.
    Cut up bars on parchment paper.

    Step By Step Instructions

    Here are the steps to make and bake the brookies.

    STEP 1: Brown the butter. Brown the butter in a frying pan. (It will fry faster this way) Whisk the butter until it foams and the milk deposits separate. Make sure to save all the brown bits. That is the most important part.

    STEP 2: Make the brownie batter. First, mix the dry ingredients together. Use a sifter to avoid any flour/cocoa powder lumps.

    STEP 3: Beat the eggs and sugar together. Next, add the sugar and eggs to a bowl with a whisk attachment. Beat for 5 minutes. This is what gives the brownies the crackle top.

    STEP 4: Add in the wet ingredients. Next, add the butter, oil, and vanilla. Mix on low. Then, add in the dry ingredients.

    STEP 5: Add in chocolate chips. Next, take the bowl off the mixer and fold in the chocolate chips. Pour brownie batter in a 9X9 pan.

    Brown butter in a pot.
    Brownie batter in a glass bowl.
    Brownie batter with chocolate chips.

    STEP 6: Bake for 15 minutes. Then, start the cookie dough. Mix the dry ingredients together.

    STEP 7: Mix brown butter and sugar together. In a separate bowl, mix the brown butter and sugar with a rubber spatula. Then, add in the vanilla and egg.

    STEP 8: Mix in dry ingredients. Next, mix in the dry ingredients. Once combined, add in the mini chocolate chips. Then, place the cookie dough in the freezer while the brownies bake.

    STEP 9: Top the brownie batter with the cookie dough. Next, take the cookie dough and flatten into discs. Use all of the cookie dough.

    STEP 10: Bake for 30 minutes. Next, bake until the edges are firm and the middle has no jiggle. Let them cool completely.

    Cookie dough batter in a glass bowl.
    Cookie dough in a glass bowl.
    Batter in a pan.

    Baking Tips

    These brownies need to be under done in the middle slightly. They will continue to bake as they cool. That is why the brownies get baked first before the cookie dough is added.

    To get the perfect slice, place the brookies in the freezer for 10 minutes. Then, cut the bars on a cutting board with a sharp knife.

    For the melted chocolate look, add chopped chocolate on top.

    Brown butter brookie bars on a parchment paper.

    FAQ

    What is the difference between brookies and blondies?

    Brookies are brownies and chocolate chip cookies combined into one dessert. Blondies usually are caramel with butterscotch flavoring.

    Why did my bars sink in the middle?

    This is due to the bars being too fudgy in the middle. Bake the brookies for an extra 5-10 minutes.

    Can I make these in an 8X8 pan?

    Yes you can. It will create thicker bars.

    Can I make this into a 9X13 pan?

    Yes you can. Double the recipe.

    Stack of 3 bars.

    Storing and Freezing

    Store these brown butter brookie bars in an airtight container at room temperature. They will last up to 5 days.

    Freezing

    Freeze these bars by wrapping tightly in cling wrap. Freeze them for up to 30 days. Thaw for 1 hour before eating.

    Brown butter brookie bars on the side.

    Other Bar Recipes To Try

    • Close up of side shot of biscoff brownies.
      Biscoff Brownies
    • Top view of cherry browies
      Roasted Chocolate Cherry Brownies
    • Pretzel millionaire shortbread with the side pointing up.
      Millionaire Shortbread

    Make sure to leave me a star review below!

    Make sure to tag me on Instagram @stephaniesweettreats. I hope you loved it! To get more ideas follow me on Pinterest.

    📖 Recipe

    Brown butter brookie bars on a marble board.

    Brown Butter Brookie Bars

    Stephanie Rutherford
    These brown butter brookie bars are brownie and chocolate chip cookie bars. The brownie layer is ultra fudgy and the chocolate chip cookie layer is full of brown butter. They are easy to make!
    4.88 from 8 votes
    Print Recipe Pin Recipe
    Prep Time 45 mins
    Cook Time 40 mins
    Resting Time 10 mins
    Total Time 1 hr 35 mins
    Course Dessert
    Cuisine American
    Servings 16 bars
    Calories 316 kcal

    Ingredients
     
     

    Fudgy Brownie

    • 1 â…“ cups White granulated sugar
    • 2 Large eggs
    • 1 Egg yolk
    • â…“ cup Oil canola or vegetable
    • 5 tablespoon Unsalted butter melted
    • 1 teaspoon Pure vanilla extract
    • ¾ cup All-purpose flour
    • ¾ cup Dutch process cocoa powder
    • 1 tablespoon Cornstarch
    • 1 teaspoon Salt
    • 1 cup Chocolate chips

    Brown Butter Chocolate Chip Cookies

    • â…“ cup Unsalted butter browned
    • â…“ cup Brown sugar packed light or dark
    • â…› cup White granulated sugar
    • 1 teaspoon Pure vanilla extract
    • 1 Large egg room temperature
    • â…” cup All-purpose flour
    • ¼ teaspoon Baking soda
    • ½ teaspoon Salt
    • ½ cup Mini chocolate chips

    Instructions
     

    • Before baking the brownies, brown the butter for the cookies. Place butter in a frying pan over medium heat. Stir constantly. Stir until the butter foams and the milk deposits separate. It will turn amber quickly. Take off heat and let it cool.
      â…“ cup Unsalted butter

    Fudgy Brownie

    • Preheat oven to 325F. Spray a 9X9 pan with baking non-stick spray. Line the bottom and 2 sides of the pan with parchment paper. Spray again.
    • In a mixing bowl, sift the flour, cocoa powder, cornstarch, and salt. Set aside. Using a mixer with a whisk attachment, combine sugar, eggs, and egg yolks. Beat on high for 5 minutes.
      2 Large eggs, ¾ cup All-purpose flour, ¾ cup Dutch process cocoa powder, 1 tablespoon Cornstarch, 1 teaspoon Salt, 1 Egg yolk
    • Melt the butter in the microwave while you wait. Add in melted butter, oil, and vanilla. Mix on low until just combined. Add in the dry ingredients. Mix on low until just combined. Scrape the bowl. Mix lightly with a rubber spatula. Add in the chocolate chips.
      â…“ cup Oil, 5 tablespoon Unsalted butter, 1 teaspoon Pure vanilla extract, 1 cup Chocolate chips
    • Pour brownie batter in the pan. Spread evenly. Bake for 10 minutes.

    Brown Butter Chocolate Chip Cookies

    • In a mixing bowl, mix the flour, baking soda and salt. Set aside. In a separate mixing bowl, mix the brown butter, brown sugar, and sugar until combined. Add in vanilla and egg. Mix.
      ⅓ cup Brown sugar, ⅛ cup White granulated sugar, 1 teaspoon Pure vanilla extract, ⅔ cup All-purpose flour, ¼ teaspoon Baking soda, ½ teaspoon Salt, 1 Large egg
    • Add in the dry ingredients. Mix until combined. Add in the mini chocolate chips.
      ½ cup Mini chocolate chips
    • Flatten cookie dough into small discs. Place on top of the brownie batter. Bake for 30-35 minutes. Bake until cookie is lightly browned on top.
    • Let it cool completely before removing from the pan and serving.

    Notes

    Flour- Make sure the flour is spooned and leveled or use a kitchen scale. Compacted flour can dry out the brownies.
    High altitude baking- Add an extra ½ tablespoon of flour to brownies. Add ½ tablespoon to cookie dough.

    Nutrition

    Calories: 316kcalCarbohydrates: 43gProtein: 2gFat: 16gSaturated Fat: 8gPolyunsaturated Fat: 2gMonounsaturated Fat: 5gTrans Fat: 1gCholesterol: 35mgSodium: 246mgPotassium: 84mgFiber: 2gSugar: 31gVitamin A: 256IUVitamin C: 1mgCalcium: 21mgIron: 1mg
    Keyword brookies, brown butter, brownie bars, chewy, chocolate chip cookie crust, easy, fudgy brownies
    Tried this recipe?Let us know how it was!

    More Brownies and Bar Recipes

    • Three lemon brownies on its side.
      Lemon Brownies
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      Birthday Cake Brownies
    • Red velvet brownies with one on its side.
      Red Velvet Brownies
    • Close up of brownie cake split open.
      Brownie Cake

    About Stephanie Rutherford

    Reader Interactions

    Comments

    1. Lilly says

      March 12, 2022 at 5:57 pm

      5 stars
      These brownie cookie bars are my favorite! I looveeddd the flavor!

      Reply
    2. Zofia says

      November 02, 2021 at 10:34 pm

      5 stars
      Amazing recipe! The flavours go so well together. The brownie is perfectly chewy and rich, and the cookie has great toffee flavour. Will definitely be making these again!

      Reply
    3. lola says

      September 12, 2021 at 1:16 pm

      4 stars
      I just made this and its a very good recipe! rich and lovely, thank you for this

      Reply
    4. Jessica says

      September 10, 2021 at 7:15 am

      Hi, I love all your recipes! I don’t have a 9x9 baking dish, can I use an 8x8? If so, how will it affect the recipe and baking time? Thanks in advance!

      Reply
      • Stephanie Rutherford says

        September 10, 2021 at 11:11 am

        Yes you can. It will create thicker bars. You will have to increase the baking time for 5-10 minutes.

        Reply
    5. lola says

      September 09, 2021 at 10:17 pm

      I think there's some website errors in the instructions?

      Reply
      • Stephanie Rutherford says

        September 10, 2021 at 11:13 am

        Sorry about that! I recently got a new ad provider and am still working out the kinks. It is better today!

        Reply

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