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Fudgy Brown Butter Brownies

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Can we just take a minute to appreciate the FUDGE factor on these brownies? And another moment to note that they are made with BROWN BUTTER? These incredibly fudgy brown butter brownies are so flavorful, so rich, and they bake with a perfectly thin crinkly top. It’s absolute chocolate heaven.

a stack of fudgy brown butter brownies

What is brown butter?

Brown butter is liquid GOLD in baking. It’s the most simple but impactful thing you can make because it only requires one ingredient…butter! Transforming basic butter into brown butter is a very quick process but releases so much flavor.

Brown butter is essentially toasted butter. Butter is melted over a burner to release the milk solids. These then sink to the bottom and toast or “brown” to create a nutty aroma and rich flavor.

To learn more about how to brown butter with step-by-step photos, I have an entire post dedicated to the topic here.

How to make brown butter brownies

In order to ensure the brown butter flavor comes through amongst the loads of semisweet and dark chocolate, I used a really simple trick to create EXTRA brown butter.

When the butter starts to melt and bubble, milk powder is added to the mix. Dry milk powder is the same as the milk solids that are released and toasted from the butter. By adding dry milk powder to the browning process, we are essentially doubling down on those toasty brown butter bits.

Once the milk powder is added, it toasts alongside the milk solids that are released from the butter. Together, the two create a SEA of toasty brown butter bits which duplicates that brown butter flavor.

Tips for baking browned butter brownies

Brown Butter – During the browning process, the milk powder is added when the butter starts to foam. It’s important to keep whisking at this point, otherwise the milk solids can burn at the bottom of the pan. As you whisk, the butter will transform from creamy yellow to amber brown.

Cocoa Powder – Right when the butter browns, quickly whisk in the cocoa powder as this will prevent the brown butter from burning. Then allow the mixture to bubble for 30 seconds. This process activates the cocoa to release even more chocolate flavor.

Sugars – Stick with the sugars used in this recipe. They both play a specific role in these brownies. The brown sugar adds a rich molasses flavor while the powdered sugar helps with the crinkly crust on top.

Measuring – For the powdered sugar and flour, gently spoon the ingredient into a measuring cup and level it it off. They both require light and fluffy cups, otherwise these brownies can turn out too sweet or not as fudgy.

Mixing – Whisk all of the ingredients up until the flour is added. At this point, switch to a rubber spatula to gently mix. This will ensure a super tender brownie, as over mixing and lead to a tough texture.

Cooling – Once the brownies have baked, allow them to cool completely. This can be done at room temperature, or sped up in the refrigerator. Either way, the brownies must set before slicing. Otherwise, they will be a fudgy soupy mess.

the top of sliced crinkle top brown butter brownies

How to bake crinkle top brownies

The secret to achieving a glossy and paper thin crust on top of brownies is simple – dissolve the sugar!

When sugar is dissolved in the batter, in creates an invisible dry barrier on top of the brownies when baked. That barrier traps air inside the brownies, but is then released through fine little cracks all on the surface.

In the end, that sugar crust on the surface bakes into a glossy paper thin top.

For this recipe, brown sugar is vigorously whisked with the eggs in order to dissolve the large sugar granules. Once fully dissolved, powdered sugar is whisked in.

Since powdered sugar is much more fine than granulated sugar, it dissolves almost instantly. When the two sugars are prepared in this exact way, it will create a glossy paper thin crust on top of these brown butter brownies.

a stack of fudgy brown butter brownies

Brown Butter Brownies FAQs

What is the best chocolate to use?

For the best flavor, use 70% cocoa dark chocolate. I prefer Lindt baking chocolate which can be found in the candy aisle of most grocery stores. Otherwise, use bittersweet baking chocolate.

Can I leave out the dry milk powder?

Unfortunately not. Not only does it lead to a much more flavorful brown butter brownie, but leaving it out can alter the texture of these brownies.

Can I mix in nuts instead of chocolate?

Sure! Walnuts or pecans would work great in these brownies. I suggest toasted the nuts at 350F for 8-10 minutes before chopping and mixing in. This will lend the most flavor.

Can I substitute the dutch process cocoa powder for regular unsweetened cocoa powder?

Yes you can, but it will lend a slightly different flavor as dutch process cocoa is much less bitter than regular cocoa.

How can I get clean cut brownies?

For the CLEANEST slices, sprits a large knife with nonstick spray between each slice. Wipe the knife off between each cut as well. This is very extra, but very effective.

How do I store brown butter brownies?

These brownies are best kept at room temperature. I found that if they are chilled, the brownies firm up a little too much more my liking. But if they are stored at room temp in an air tight container, they will keep for about 5 days.

close up on a bite taken from a fudgy brownie

For more brownie recipes, check out my:

Make sure to tag me @butternutbakery on Instagram and leave a review below if you make these brown butter brownies. To pin this recipe and save it for later, you can use the button on the recipe card, the buttons above or below this post, or on any of the photos above. Happy baking!

Watch how to make these fudgy brown butter brownies:

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a gentle reminder that these thick and fudgy brown butter brownies exist 🤤

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a stack of fudgy brown butter brownies

Fudgy Brown Butter Brownies


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4.9 from 43 reviews

  • Author: Jenna Barnard
  • Total Time: 1 hour 50 minutes
  • Yield: 16 brownies

Description

These brown butter brownies are the FUDGIEST and the most FLAVORFUL brownies you will ever have! They’re made with loads of brown butter, dark and semisweet chocolate, and bake with a glossy paper thin crinkle top.


Ingredients

Brown Butter Brownies

  • 1 cup (220g) unsalted butter, sliced into tablespoons
  • 1/4 cup (38g) dry milk powder*
  • 1/2 cup (50g) dutch process cocoa powder
  • 6 oz 70% cocoa dark chocolate (or bittersweet chocolate), chopped
  • 3 tbsp oil (vegetable or olive oil)
  • 3 large eggs, room temp
  • 1/2 cup (100g) light brown sugar, packed
  • 1 3/4 cups (193g) powdered sugar, spooned and leveled
  • 1 tsp vanilla extract
  • 1/2 cup (66g) all purpose flour, spooned and leveled
  • 1/4 tsp kosher salt
  • 1 cup (180g) semisweet chocolate chips (optional)

Instructions

Brown Butter Brownies

  1. Preheat the oven to 350F.
  2. Add the butter to a medium saucepan and place over medium heat.
  3. Allow it to melt and then continue to whisk as it starts to bubble.
  4. Once it starts to foam up, add in the milk powder and quickly whisk. After about 30-60 seconds, it should start to darken into an amber color and give off a nutty aroma.
  5. Add in the cocoa powder and quickly whisk to combine. Allow the mixture to bubble for 30 seconds, then remove from heat and mix in the chopped chocolate (to melt) and oil.
  6. While the chocolate butter mixture cools, whisk together the eggs and brown sugar in a large mixing bowl.
  7. Vigorously whisk until the sugar is fully dissolved (about 90 seconds of fast whisking). Test to see if the sugar is dissolved by rubbing the mixture between two fingers. Stop whisking when you can no longer feel the sugar granules.
  8. Add in the powdered sugar and whisk until completely smooth.
  9. Mix in the vanilla.
  10. When the butter chocolate mixture is no longer hot (it’s ok if it’s slightly warm), pour into the eggs and sugar and whisk to combine.
  11. Switch to a rubber spatula and fold in the flour and salt.
  12. If the batter is still warm, allow it to rest at room temperature for a few minutes before mixing in the chocolate chips. If they’re mixed into a warm batter, they can melt.
  13. In the meantime, prepare an 8×8 square baking dish. Lightly coat with nonstick spay and press in a sheet of parchment paper to fully cover the bottom and two sides.
  14. Once the batter has cooled, fold in the chocolate chips and spread the batter in the prepped pan.
  15. Bake for 28-32 minutes. Right when they’re pulled from the oven, immediately slam the pan against a hard surface. This will help create an even fudgier texture.
  16. Allow the brownies to cool at room temp for 90 minutes or in the refrigerator for 1 hour.
  17. You can tell if they’re ready to slice by lifting them out of the pan by the two parchment paper ends. If the brownies bend in the middle, they’re not ready. If they hold firm while lifting, you’re good to go.
  18. Slice into 16 bars, wiping off the knife between each cut, and enjoy!

Notes

DRY MILK POWDER – This is an essential ingredient as it amplifies the brown butter flavor. Although it’s not an incredibly common baking ingredient (although it should be) it adds LOADS of flavor to any dessert. Outside of this recipe, I also use it in my vanilla cupcake recipe to add a well rounded flavor. Try adding a tablespoon or two to your next batch of cookies, frosting, or cupcakes to experience just how magical this ingredient is.

  • Prep Time: 20 minutes
  • Cooling Time: 1 hour
  • Cook Time: 30 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
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Meet Jenna

I’m the creator, baker, and photographer behind Butternut Bakery. Here I share desserts for every diet because I believe everyone should have a chance to indulge!

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106 Comments

  1. This is the best brownie recipe I have ever made! I ate 5 brownies today and I REGRET*NOTHING! I used bargain chocolate — 63 percent choc for melting plus semi sweet chips. Jenna lays out every step for the tricky chemical process of making a brownie really work (eg, not overworking, adding a low amount of flour later into the recipe, letting choc cook, etc)! So follow her steps to the letter and you’ll get amazing brownies too.






  2. I made these today and they are delicious. I thought that they were done. And I let them cool for more than the allotted time. Even when I cut into them they were very very fudgy in the middle. Almost like I hadn’t cooked them enough. Any recommendations for next time?

  3. Hi! These brownies are amazing! I have a question tho, I used a dark 8×8 pan, and it came out perfect. However, when I used an aluminum pan, the brownies came out too gooey…

    it is not underbaked, but the middle is too soft for my liking. Do you have any tips for this problem? Thank you!






  4. These are so good!! They are my new go-to brownie recipe! Quick question – the milk powder didn’t fully dissolve into the butter, leaving a gritty texture. I whisked constantly when I added it. Any idea about why it wouldn’t have fully combined? Thank you!






  5. I made these yesterday and while it took me a while to assemble all of the ingredients (mine en place) it was worth the outcome. I will say I was a bit tired after making these! But oh so worth it!






  6. I just made these the other day and they are literally the best brownies ever!! That milk powder just makes them so gooey and adds such a delicious flavor!! Loved them! Thank you!






  7. Delicious!!!!’ I didn’t have oil and was worried that it would mess up the brownies, but it was still delicious. I’m already planning on making it again (with oil). Thank you!!






  8. i was so skeptical, my brownies always end up mediocre and without that essential papery crust on top. I WAS SO WRONG!!! this recipe is PERFECT i have never had brownies so good!!! if you’re thinking about making these, DO IT!! the brown butter with the chocolate melted into it makes it taste so rich and high-class, separating it from your betty crocker bake sale brownies. i’m never making anything else!!






  9. I get soo many compliments for these brownies, and they are worth the time and effort! I dp have one question though; my most recent batch I was in a hurry and decided to use a hand mixer instead of doing everything by hand. Mistake! The trxture was almost gritty, and I found that they were greasier, especially when warmed. Any idea why there’s such a drastic change between using a mixer and doing it by hand??? Thanks!