Brown Butter Blondies

These Brown Butter Blondies have incredible flavor and the perfect chewy texture, and they’re simple to make! They’re great for bake sales, potlucks, or anywhere you need a dessert that holds up well and still tastes delicious for several days after its made.

Brown Butter Blondies with Walnuts On Cutting Board - Perfect for bake sales and potlucks

Every time I make something with brown butter, I feel like I’m cheating.

Brown butter just makes everything SO good. The flavor and aroma are out of this world, and it takes any dessert up several notches with very little effort.

Though the ingredients for this blondie recipe are simple, the brown butter gives them that quality where you take a bite and think, what IS that?!

You know, when you get a gloriously delicious flavor and can’t quite put your finger on what it is, until you realize it has the nutty aroma and flavor that can only be from butter whose milk solids have been caramelized to perfection.

Swoon.

Brown Butter Blondies Squares With Chopped Walnuts

What is a blondie?

I like to think of a blondie as like a brownie without the chocolate. They have a very similar texture, with a great chewiness and rich bite, but with a completely different flavor. They are very sweet, and you get notes of brown sugar and butter…and in this case, brown butter!

(Side note: if you need a chocolate brownie fix, see Irish Cream Brownies with Caramelized White Chocolate Buttercream, or these fudgy Coconut Oil Brownies).

In times past, I would make these blondies with toffee bits mixed in, but I now make them with chopped walnuts. Something about the walnuts plays so well with the brown butter, and balances out the sweetness of the blondies.

While you could leave the nuts out, even a family member of mine who doesn’t like nuts admitted that they’re really good here.

Let’s make the blondies. It’s so easy!

First we need to brown the butter, which only takes about 5 minutes. First, melt the butter:

Melting butter in Saucepan For Brown Butter

Once the butter has melted, it will foam like crazy, then start to subside:

Making Brown Butter - Foamy Stage

And a couple minutes later, the foam will be mostly gone, and you’ll see clumps of brown bits in the bottom of the pan. Those are the caramelized milk solids that make for brown butter.

Caramelized Milk Solids in Brown Butter

Pour the brown butter into a big mixing bowl, and add brown sugar and granulated sugar:

Brown Butter, Sugar, and Brown Sugar in Mixing Bowl

Beat the butter and sugars together with a hand mixer until combined, then add two eggs:

Brown butter, sugar, and eggs in mixing bowl for blondies

Beat it together until the mixture turns creamy and light in color, then add vanilla extract:

Wet Ingredients for Brown Butter Blondies with Vanilla Extract

For the dry ingredients, combine flour, baking powder, and salt:

Flour, Baking Powder, and Salt for Brown Butter Blondies Dry Ingredients

Whisk to combine the dry ingredients, then add them to the wet:

Dry ingredients with wet ingredients for brown butter blondies

When the flour has almost disappeared into the wet ingredients, stop and add some chopped walnuts:

Chopped Walnuts In Brown Butter Blondie Batter

Finish mixing the walnuts in (I do it by hand, so I don’t overstir), then spread the batter out into an 8×8 dish:

Brown Butter Blondie Batter Spread in 8x8 Enamel Baking Dish

I have a square of parchment paper down in the bottom for easy removal of the blondies later (I know you can’t see it because of the batter on top, but it’s there)!

Bake the blondies for about 35-40 minutes until golden, and a toothpick inserted into the center comes out clean.

Baked Brown Butter Blondies in 8x8 pan with Golden Brown Color

I wait several hours, and sometimes even overnight, before cutting them, so they cut cleanly. Though technically you can eat them as soon as they come out of the oven, I think they taste best once they’ve cooled well, at least a few hours. They taste fantastic the next day too.

Baked and Cooled Brown Butter Walnut Blondies

The blondies freeze well and are great for bake sales, potlucks, or whenever you need a dessert that travels nicely. Enjoy!

For more of my favorite baked bars, I recommend these Cookie Dough Cheesecake Bars and Chocolate Peanut Butter Marshmallow Squares.

Blondies Tips:

  • Can you freeze blondies? Yes, they freeze beautifully for 2 months! Make sure they’re sealed in a bag or container so they don’t dry out.
  • How long will blondies keep? About 3 days at room temperature before the flavor starts to deteriorate and they dry out, or you can freeze for 2 months.
  • Are blondies the same as brownies without cocoa? They’re definitely similar in terms of texture, though the flavor is very different.
  • How to have the cleanest cut squares: Let the blondies cool for at least 4 hours, so the crumb has time to set. Then cut with a sharp knife.

Brown Butter Blondies

These Brown Butter Blondies have incredible flavor and the perfect chewy texture, and they're simple to make! 

1 review

Ingredients

  • 1/2 cup unsalted butter (1 stick)
  • 5 oz all-purpose flour, by weight (1 cup measured)
  • 3/4 tsp baking powder
  • 3/4 tsp salt
  • 8 oz light brown sugar, by weight (1 cup packed if measured)
  • 1/4 cup granulated sugar
  • 2 large eggs
  • 1 tsp vanilla extract
  • 3/4 cup chopped walnuts

Instructions

  1. Preheat the oven to 350 degrees F. Line the bottom of an 8x8 baking dish with parchment paper.
  2. Make the brown butter: In a small pan set over medium heat, melt the butter and cook until it turns brown and smells nutty, about 5 minutes. Try not to walk away from the butter, as it can go from brown to burned very quickly. Pour the brown butter into a large mixing bowl and let it cool slightly.
  3. Whisk together the flour, baking powder, and salt to combine.
  4. Add both sugars to the brown butter, and mix on medium speed with a hand mixer until well combined, about 2 minutes. Add the eggs and beat for another 2 minutes, until the mixture has lightened in color. Add the vanilla, and beat for 30 seconds.
  5. With the mixer on low, slowly add the flour mixture, and stop mixing right before the flour disappears.
  6. Add the chopped walnuts, then finish stirring by hand with a spatula, just until the flour is fully mixed in.
  7. Pour the mixture into the prepared pan and bake for about 35-40 minutes, until a toothpick inserted into the center comes out clean. Cool on a wire rack, and cut into squares. Enjoy!

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Recipe Notes

Though the blondies can technically be eaten right away out of the oven, they taste better and cut more cleanly after they've cooled for a few hours.

Nutrition Information Serves 16     adjust servings
Nutrition Facts
Serving Size
Amount Per ServingAs Served
Calories 195kcal Calories from fat 90
% Daily Value
Total Fat 10g15%
Saturated Fat 4g20%
Transfat 0g
Cholesterol 38mg13%
Sodium 106mg4%
Carbohydrate 25g8%
Dietary Fiber 1g4%
Sugars 17g
Protein 3g

Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs:

Calories2000
Total FatLess than65g
Sat FatLess than25g
CholesterolLess than300mg
SodiumLess than2,400mg
Total Carbohydrate300g
Dietary Fiber25g

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This post was updated with new photos, writing, and a recipe change. It was originally published in April 2011. The recipe change was swapping walnuts in for toffee bits.