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Close up of Nutella brown butter blondies
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5 from 13 votes

The best Nutella blondies

These brown butter blondies are topped with generous swirls of Nutella for the best cookie bars you've ever had in your life.
Prep Time20 minutes
Cook Time25 minutes
Total Time45 minutes
Course: Dessert
Cuisine: American
Servings: 16 squares
Calories: 202Calories


  • An 8x8 baking pan
  • Saucepan use code CH20 for 20% off!


  • ¾ cup butter
  • ¾ cup brown sugar
  • cup granulated sugar
  • 2 large egg
  • 1 teaspoon vanilla extract
  • 1 ¼ cup flour
  • 1 tsp salt
  • ¼ cup Nutella for swirling on top


Make the brown butter

  • In a small heavy-bottomed saucepan, over medium heat, melt the butter, making sure to stir continuously. Continue cooking it for 3-5 minutes or until the butter is foamy and turns medium golden brown.
  • This process is called browning the butter. Keep a close eye on it because it can burn easily. Remove from the heat, transfer to a medium bowl, and let the butter cool down to room temperature. It doesn't have to harden.

Make the blondie layer

  • Preheat the oven to 350F then line an 8x8 inch baking pan with parchment paper.
  • When the butter is at room temperature, mix the melted brown butter, granulated sugar, and brown sugar together on medium speed until combined.
  • Add the eggs, and the vanilla extract and whip until everything is light and fluffy. This process will create a beautiful crinkly top.
  • Mix in the flour and salt just until the flour disappears. You don't want to over-mix the brown butter blondie mix.
  • Spread the blondie mixture in the prepared 8X8 inch baking pan, top with dollops of Nutella, and swirl using a sharp knife or toothpicks. Bake for 25 minutes.
  • Once baked, pull out the blondies from the oven and allow them to cool down fully before slicing into them. I let them cool for an hour or two depending on my kitchen's temperature. They should be at room temperature. This will allow the bars to be fully set. Slice into 16 equal squares and enjoy.


You can store these in an airtight container and they will last up to:
  • 4 days in an air-tight container at room temperature. 
  • A week in an air-tight container in the fridge.
  • 1 monthin an air-tight container in the freezer! 


Calories: 202Calories | Carbohydrates: 25g | Protein: 2g | Fat: 11g | Saturated Fat: 7g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 1g | Cholesterol: 46mg | Sodium: 228mg | Potassium: 55mg | Fiber: 1g | Sugar: 17g | Vitamin A: 300IU | Calcium: 21mg | Iron: 1mg