Brown Butter Blondies

4.67 from 3 votes
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With nutty browned butter and mix-ins of your choice, these Brown Butter Blondies are soft, chewy, and have the most incredible toffee-like flavor.

I've been making blondies for years, but once I tried them with browned butter--game changer! With a mere 5 minutes of added effort, the brown butter adds rich caramel notes turning these easy cookie bars into a treat worthy of any bakery. These will forever be my favorite version.

Two Brown Butter Blondies with white chocolate chips and walnuts cut into squares on plate.

Kristen's Tips for Perfect Blondies

With a crinkly top, crispy edges, and a soft and chewy texture, these blondies are reminiscent of a brownie--without the addition of cocoa powder. They are flavorful, forgiving, and easy to customize, but a few tips ensure the best resultshieve the results you are looking for.

  • Add What You Like. Chocolate chips, white chocolate, nuts, candies, shredded coconut, or toffee bits, are all great options to fold into the blondie batter before baking. Alternatively, omit the add-ins altogether.
  • Use dark or light brown sugar. Dark brown sugar further enhances the nutty undertones of the brown butter, but will make your bars a bit darker in color.
  • Fine sea salt is best. It compliments the nutty undertones of the butter and melts beautifully into the batter.
  • Baking powder is optional. Omit the baking powder for a dense, gooey blondie OR add a bit of baking powder for a more cake-like texture. I like adding just a tiny bit to strike the perfect balance between the two.
  • The type of pan matters. A metal 8x8 pan delivers the crispiest edges which contrasts the soft and chewy center perfectly. Using glass? Add 3-5 extra minutes to the bake time. And ALWAYS line the pan with parchment paper for easy removal.

Happy Cooking! xo Kristen

How to Make Blondies with Brown Butter

I promise this brown butter blondie recipe is incredibly easy to make, but I want to help walk you through the steps to ensure you have perfect results.

Step One: Brown the Butter

Browning butter sounds complicated, but it is SO easy to do! And while you can certainly opt to just melt the butter in the microwave and proceed with the recipe, you will be missing out on the rich, nutty notes that browned butter adds to these blondies.

  • Melt butter over medium heat. Place the butter in a small saucepan and melt over medium heat, stirring constantly.
  • Once melted the butter will begin to foam.
  • Continue to cook, stirring constantly, until the foam subsides, the butter turns golden in color and smells nutty. You will see little brown flecks on the bottom of the pan. That is exactly what you want--those are the milk solids that have toasted and give the browned butter it's nutty quality.
Small saucepan with butter that has melted and turned slightly golden and solids at bottom of pan.

Step Two: Let Butter Cool

After removing the saucepan from the heat, immediately transfer the butter to a large heat-safe mixing bowl and let cool for 10 minutes. This will prevent the egg from becoming scrambled.

Step Three: Add Remaining Ingredients

There is no need to mix the wet ingredients and dry ingredients in a separate bowl, saving yourself an extra dish. That said, pay attention to the order in which the ingredients are added so the dough is evenly combined without having to be overmixed.

  • Whisk in brown sugar, vanilla, egg, baking powder, and salt until well combined.
  • Gently fold in the flour along with the mix-ins of choice until just combined.
Browned butter in mixing bowl with brown sugar, vanilla, and egg whisked into the butter.
Blondie batter with white chocolate chips and walnuts in large mixing bowl.

Step Four: Spread in Pan

The blondie dough is thick, much like chocolate chip cookie dough. It is best to use a spatula to gently press the dough into an even layer in a baking dish lined with parchment paper.

Blondie batter with white chocolate chips spread out in baking dish lined with parchment paper.

Step Five: Bake

You will know the blondies have finished baking when the edges are fully set and golden and the center is set but still just a bit jiggly. They will continue to set and firm up as they cool, so don't be tempted to bake until center is fully set.

Baked blondies in metal pan lined with parchment paper.

Step Six: Cool and Slice

It is best to let the baking dish cool on a cooling rack for 10 minutes. Then lift the bars out of the pan, using the parchment paper. Cut into squares and serve.

Two Browned Butter Blondies with white chocolate chips and walnuts cut into squares on plate.

Notes on Yield & Storage

This recipe makes 16 small squares, which are perfectly satisfying as these Brown Butter Blondies are incredibly rich. But if you are feeling decadent, plan for only 9 servings.

If you happen to have leftovers, store in an airtight container at room temp up to 4 days or freeze in a freezer-safe bag for up to 2 months.

More Easy Dessert Recipes

Perfect for bake sales, potlucks, or just a decadent after-school snack, you can never go wrong with a blondie. But if you need a few more easy dessert recipes, check out some favorites below.

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4.67 from 3 votes

Brown Butter Blondies

Servings: 16
Prep: 10 minutes
Cook: 25 minutes
Cooling Butter + Bars: 20 minutes
Total: 55 minutes
Two Browned Butter Blondies with white chocolate chips and walnuts cut into squares on plate.
With nutty browned butter and mix-ins of your choice, these Brown Butter Blondies are soft, chewy, and have the most incredible toffee-like flavor.

Video

Ingredients 

  • ½ cup unsalted butter
  • ¾ cup brown sugar, dark or light
  • 1 teaspoon vanilla extract
  • 1 large egg, at room temperature
  • ¼ teaspoon baking powder, OPTIONAL (see notes)
  • ½ teaspoon sea salt
  • 1 cup all-purpose flour, 120 grams
  • 1 cup add-ins of choice, chocolate chips, candies, chopped nuts, dried fruit, shredded coconut, etc. (see notes)

Instructions 

  • Preheat the oven to 350°F. Line an 8x8-inch metal baking dish with parchment paper.
  • Place ½ cup unsalted butter in a small saucepan and melt over medium heat, stirring constantly. It will foam at first, the foam will begin to subside, and then little browned bits will begin to float to the bottom as the butter bubbles. Remove from the heat IMMEDIATELY once the butter smells nutty and is deep, golden brown. This will take anywhere from 3-8 minutes.
    Small saucepan with butter that has melted and turned slightly golden and solids at bottom of pan.
  • Pour the browned butter into a large heat-safe bowl and allow to cool for about 10 minutes.
  • Add the ¾ cup brown sugar, 1 teaspoon vanilla extract, 1 large egg, ¼ teaspoon baking powder, and ½ teaspoon sea salt to the browned butter and whisk well to combine.
    Browned butter in mixing bowl with brown sugar, vanilla, and egg whisked into the butter.
  • Add the 1 cup all-purpose flour and up to 1 cup add-ins of choice and gently fold together with a wooden spoon or spatula until just combined.
    Blondie batter with white chocolate chips and walnuts in large mixing bowl.
  • Transfer the batter to the prepared pan and use a spatula to spread it in an even layer.
    Blondie batter with white chocolate chips spread out in baking dish lined with parchment paper.
  • Bake for 20-22 minutes, or until the edges are golden brown and the center is set, but still just a bit jiggly. They will continue to set up as they cool, so don't overbake.
    Baked blondies in metal pan lined with parchment paper.
  • Let the blondies cool in the pan for 10 minutes, remove the parchment paper and continue to cool. Slice and serve.

Notes

For a glass baking dish, you will need to increase the bake time 25-28 minutes.
Baking Powder: Adding a bit adds a slightly chewy texture to the blondies. Omit for a dense, gooey blondie. 
For add-ins: I recommend no more than 1 cup of total add-ins, but find that using only up to ½ cup of chocolate (chips or chunks) or the blondies become a bit too rich and gooey. For nuts, I find using up to ½ cup works well. More than that, the batter becomes a bit dry. I personally love using ½ cup chocolate chips and ½ cup cup chopped nuts. In the photos ½ cup each of white chocolate and walnuts have been used. 
Storage: Store in an airtight container at room temp up to 4 days or freeze in a freezer-safe bag for up to 2 months.

Nutrition

Calories: 126kcalCarbohydrates: 16gProtein: 1gFat: 6gSaturated Fat: 4gPolyunsaturated Fat: 0.3gMonounsaturated Fat: 2gTrans Fat: 0.2gCholesterol: 27mgSodium: 82mgPotassium: 42mgFiber: 0.2gSugar: 10gVitamin A: 197IUCalcium: 19mgIron: 1mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Tried this recipe?Mention @amindfullmom or tag #amindfullmom!

About Kristen Chidsey

Kristen is a wife, busy mom of two, and creator of A Mind "Full" Mom. From breakfast to dinner to dessert, it is her passion to share tried-and-true recipes that are big on flavor, made with easy-to-find ingredients, and family-approved!

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4.67 from 3 votes

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6 Comments

  1. 4 stars
    This was a tasty recipe. However, it was a bit greasy. Maybe a bit more flour would make this a 5 star for my tastebuds. Thank you for sharing it.

    1. Hi Belinda! These bars are definitely soft and gooey. For a bit more structure that may make them feel less greasy, try adding the baking powder.

  2. 5 stars
    Absolutely delicious! I only had a 9x9 in. square pan, but they still turned out wonderfully. I used the baking powder and loved the chewy texture.

  3. 5 stars
    Thanks for the recipe Kristen,
    extremely good, tasty, creamy, just right.
    I added chocolate chips and it turned out great....