Nutella Swirl Bars

4.63 from 16 votes
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Nutella Swirl Blondies – Quick and easy blondies made in one bowl with a swirl of Nutella. All that buttery and brown sugar taste you love with an extra touch of chocolate.  

Blondies swirled with nutella on a cutting board

 

As a self-professed chocoholic, raised on a steady diet of fudgy brownies, I didn’t discover the world of blondies until my late 20’s. Their simplicity and versatility quickly won me over, and I’ve been experimenting with different variations ever since.

Enter these Nutella Swirl Blondies – a delightful twist on the classic blondie, swirled with everyone’s favorite chocolate-hazelnut spread. Blondies, often dubbed the “vanilla counterpart to brownies,” the have a buttery, brown sugary base that’s just waiting to be customized with your favorite mix-ins. Butterscotch or Chocolate Chip Blondies, anyone?

Blondies are also one of the simplest desserts to make, so if you are intimidated by baking, this is a great place to start! With just one bowl and a handful of ingredients, you can whip up a batch of these beauties in no time. No need for a fancy mixer or complicated steps – just mix, swirl, and bake.

What You’ll Need

Be sure to scroll to the bottom of the post for the FULL PRINTABLE recipe card.

  • Butter – I always use unsalted when baking
  • Brown Sugar
  • Egg
  • Vanilla Extract
  • All-Purpose Flour
  • Baking Powder
  • Salt
  • Nutella – You can use any kind of chocolate spread. For a nut-free version, try Hershey’s Chocolate Spread.
Blondies swirled with nutella stacked on a cutting board

How to Make Nutella Swirl Blondies

  • Prepare the Pan and Preheat the Oven. Grease an 8×8 pan or line it with parchment paper, then preheat the oven to 350º F.
  • Mix Butter and Sugar. Combine melted butter and light brown sugar until smooth, creating a rich base for the blondies.
  • Incorporate Wet Ingredients. Stir in a whole egg and vanilla extract, ensuring they’re well mixed with the butter-sugar mixture.
  • Add Dry Ingredients. Mix in all-purpose flour, baking powder, and salt until just combined, forming the blondie batter.
  • Pour Batter into Pan. Transfer the batter into the prepared pan, spreading it evenly to ensure uniform baking.
  • Swirl in Nutella. Drop spoonfuls of Nutella across the batter’s surface, then use a knife to create a marbled swirl effect.
  • Bake Until Set. Place the pan in the oven and bake for 25-30 minutes or until the blondies are set and lightly browned.
  • Cool and Serve. Allow the blondies to cool completely in the pan before cutting into squares and serving.
Blondies swirled with nutella on a cutting board

Recipe Tips & Tricks

  • Experiment with Nut Butters. Explore using different types of nut butter like almond, cashew, or peanut butter for unique flavor variations in your blondies.
  • Get Creative with Mix-Ins and Toppings. Enhance the flavor and texture of your blondies by incorporating mix-ins such as chopped nuts, dried fruits, caramel bits, or pretzel pieces. For added indulgence, top the blondies with a drizzle of melted chocolate, caramel sauce, or a sprinkle of sea salt after baking.
  • Check for Doneness. Insert a toothpick into the center of the blondies to check for doneness. It should come out with a few moist crumbs attached.
  • Cooling Time Matters. Allow the blondies to cool completely in the pan before cutting to ensure they set and maintain their shape.
  • Storage Tips: Store leftovers in an airtight container at room temperature for up to several days or freeze for longer-term storage.
  • Serve with Ice Cream. Elevate your blondie experience by serving warm blondies with a scoop of vanilla ice cream for a delightful dessert treat.
Can I use white sugar instead of brown sugar?

While brown sugar adds depth and moisture to the blondies, you can substitute with white sugar if necessary, though the flavor and texture may vary slightly.

How to store leftover blondies?

Store leftover blondies in an airtight container at room temperature for up to 3 days. You can also refrigerate them for up to a week or freeze them for up to 3 months.

Can I use something other than Nutella?

Yes, you can skip the Nutella swirl or substitute your favorite chocolate or nut spread, such as chocolate ganache, almond butter, or chocolate spread, for a delicious twist on the classic recipe. Or make your own Homemade Nutella!

More Delicious Dessert Recipes

Nutella Swirl Blondies - Quick and easy blondies made in one bowl with a swirl of Nutella. All that buttery and brown sugar taste you love with an extra touch of chocolate.
4.63 from 16 votes

Nutella Swirl Blondies

By Erin
Nutella Swirl Blondies – Quick and easy blondies made in one bowl with a swirl of Nutella. All that buttery and brown sugar taste you love with an extra touch of chocolate. 
Prep: 5 minutes
Cook: 25 minutes
Total: 30 minutes
Servings: 12

Ingredients 

  • 1/2 cup unsalted butter, melted
  • 1 cup light brown sugar
  • 1 whole large egg
  • 1 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • 1/2 teaspoon baking powder
  • 1/4 teaspoon salt
  • 3 Tablespoons Nutella, or any chocolate spread

Instructions 

  • Preheat oven to 350º F. Prepare 8×8 pan by spraying well with non-stick spray, or line with parchment paper
  • Blend the butter and brown sugar together until smooth.
  • Stir in egg and vanilla. and mix until well incorporated
  • Add flour, baking soda and salt, mix until just combined.
  • Pour the batter into the prepared pan. Drop teaspoonfuls of Nutella across the top of the batter. Use a knife to swirl the Nutella throughout the pan.
  • Bake for 25 – 30 minutes or until it is set, and slightly browned. Allow to cool completely before cutting and serving.

Nutrition

Serving: 1g | Calories: 221kcal | Carbohydrates: 29g | Protein: 2g | Fat: 11g | Saturated Fat: 8g | Polyunsaturated Fat: 3g | Cholesterol: 36mg | Sodium: 123mg | Fiber: 1g | Sugar: 20g

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

Additional Info

Author: Erin
Prep Time: 5 minutes
Cook Time: 25 minutes
Total Time: 30 minutes
Course: Dessert Recipes
Cuisine: American
Servings: 12
Calories: 221
Keyword: nutella blondies
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About Erin S

Welcome to Dinners, Dishes, & Desserts where my love of food meets my busy life. My name is Erin and I’m a casual home cook who loves to feed people. On this blog, you’ll find hundreds of quick and easy recipes made mostly from scratch. My days are spent in the kitchen, creating new recipes to share with family and friends.

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13 Comments

  1. Could you please give me the equivalent weights of.the
    ingredients in grams or ounces

    1. I don’t know the equivalent measurements, but according to google:
      1/2 cup Butter = 113 grams
      1 cup light brown sugar = 200 grams
      1 whole egg
      1 teaspoon vanilla extract = 5 ml
      1/4 tsp. salt = 1 ml
      1 cup all-purpose flour = 8 oz or 225 grams
      3 Tbls Nutella = 1.5 oz

  2. 5 stars
    These were absolutely delicious! My office is still raving about them.

    I do have one question – I had a hard time with the crust sticking to the upper layer of the bars. The two layers fell apart very easily. Any idea how I could fix this?

    1. Did you use a knife to swirl in the nutella well? Then it should mix together and not separate. I have made these many times and have not had the Nutella come apart from the bars, so I think it must be swirling it well enough.

  3. The swirl of Nutella, delicious! Everyone in my family went crazy for them! We’ll be making them again soon!

  4. What a decadent combination for a dessert. This was amazing and I will definitely make it again and again!