Brown Butter Blondies Recipe

Carrie Vasios

The French are old hands at incorporating the nutty, toasted flavor of beurre noisette (i.e. brown butter) into their pastries. It's a simple trick, but one that can totally change the nature of your dessert. By heating butter over low heat, you separate the butter into butterfat and milk solids. The milk solids begin to brown and gives the butter a toffee-like flavor.

I recently brought this technique to an all-American treat: the blondie. It made perfect sense as blondies already have a butterscotch-y, caramel-y flavor thanks to ample amounts of brown sugar and some vanilla. Adding browned butter simply takes that same flavor profile up a notch.

These are great cut into 1-inch squares and served as dessert at a cocktail party or with coffee after a low key dinner. A few bites gives you a ton of flavor, and for those who care, it's on trend with the whole "childhood treats given an adult spin" that's sweeping pastry departments these days. Of course if you want to eat a whole big blondie straight from the pan, you won't get any judgment from me.

Recipe Details

Brown Butter Blondies Recipe

Active 20 mins
Total 45 mins
Serves 12 servings


  • 8 tablespoons (1 stick) unsalted butter

  • 1 cup flour

  • 1/2 teaspoon baking powder

  • 1/4 teaspoon salt

  • 1 cup brown sugar

  • 1 egg

  • 1 teaspoon vanilla


  1. Adjust oven rack to middle position and preheat oven to 350°F. Grease pan with butter.

  2. Place butter in a small saucepan over medium heat. Cook, stirring occasionally, until melted. Continue to cook (the butter will foam) until it is fragrant and a nutty brown color. Take off the heat and pour through a sieve into a large bowl. Let cool to room temperature.

  3. In a small bowl, whisk together flour, baking powder, and salt; set aside.

  4. Add brown sugar to bowl with butter and whisk until smooth. Add egg and vanilla and whisk to combine. Stir in dry ingredients until just incorporated. Pour batter into pan and smooth top. Bake until a cake tester inserted into the middle comes out clean, 20-30 minutes. Let cool at least 15 minutes before cutting.

Special equipment

8- by 8-inch baking pan, whisk, saucepan

Nutrition Facts (per serving)
171 Calories
8g Fat
23g Carbs
2g Protein
Show Full Nutrition Label Hide Full Nutrition Label
Nutrition Facts
Servings: 12
Amount per serving
Calories 171
% Daily Value*
Total Fat 8g 10%
Saturated Fat 5g 25%
Cholesterol 36mg 12%
Sodium 76mg 3%
Total Carbohydrate 23g 8%
Dietary Fiber 0g 1%
Total Sugars 15g
Protein 2g
Vitamin C 0mg 0%
Calcium 30mg 2%
Iron 1mg 4%
Potassium 40mg 1%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)