These Flourless Fudge Hazelnut Brownies are gooey, rich, dense, and incredibly chocolatey. They’re also naturally gluten-free and can be easily made paleo or keto-friendly!

a chocolate brownie showing the inside texture

The ultimate fudgy brownie recipe

Ohhhhh these brownies you guys! If you’re a fudgy brownie lover, then this is the ONLY brownie recipe you’ll need. They’re completely flourless, dense, rich, fudgy, gooey and so damn chocolatey.

Though, if you love a bit more of a cakey brownie, you’ll love these Almond Flour Brownies. And if you love red velvet, these Red Velvet Brownies will be right up your alley!

Is there anything else you could want in a brownie recipe? I think not.

Flourless chocolate brownies

The key to making flourless chocolate brownies is to use some cornstarch in the batter. This helps the brownies set, and it gives them that super gooey and fudgy center that we all love!

cut up chocolate brownies on a marble pastry board

Flourless brownies are naturally gluten-free and can be made paleo by using coconut sugar in the recipe.

You may be wondering if flourless brownies are healthier than regular brownies, which really depends on what you consider healthy. At the end of the day, this recipe is still a dessert with some sugar and chocolate in it. Though if you’re sensitive to flour, this is definitely a great “healthier” alternative to traditional brownies.

How to make flourless brownies

The secret to making epic flourless brownies is to use both cocoa powder and melted chocolate in the batter. This will give your brownies a super rich and decadent chocolate taste!

flourless fudge brownies cut into squares on some parchment paper

Flourless brownies also have 3 eggs in them to help bind everything together.

These brownies really come together in a few simple steps:

  • Melt the chocolate
  • Mix everything together in a bowl
  • Bake

No mixers or processors needed for this recipe!

A few notes to make this recipe perfectly

  • These flourless fudge hazelnut brownies are loaded with crushed hazelnuts, which gives them some great texture since they are so fudgy.
  • If you are not a fan of hazelnuts, you can use almond, walnuts or just leave nuts out entirely from this recipe.
  • I recommend using high-quality dark chocolate for these brownies. If you are using regular semi-sweet chocolate chips, you may want to reduce the amount of sugar in the recipe to 1/2 cup, since chocolate chips will have more sugar in them than 70% dark chocolate.
  • Store any leftover brownies in an air-tight container for up to a week.
a hand holding a fudge brownie topped with powdered sugar

More chocolatey recipes to try

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a chocolate hazelnut brownie topped with powdered sugar

Flourless Fudge Hazelnut Brownies

  • Author: Jess
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 mins
  • Yield: 16 brownies 1x
  • Category: Dessert
  • Method: Bake
  • Cuisine: American


The ultimate fudgy brownie recipe! 


  • 1/2 cup butter melted and cooled (or coconut oil)
  • 225 grams 70% dark chocolate, melted
  • 3/4 cup organic cane sugar (use coconut sugar for Paleo) 
  • 3 eggs
  • 4 tbsp cocoa powder
  • 4 tbsp cornstarch or tapioca starch
  • 1/2 tsp salt
  • 1 tsp vanilla extract
  • 1/2 cup chopped hazelnuts


  1. Preheat the oven to 350 degrees and line an 8×8 inch pan with parchment paper.
  2. Mix the butter, dark chocolate and sugar together in a bowl until well combined. Let cool completely before adding the eggs.
  3. Whisk in the eggs until smooth and combined, but don’t overmix.
  4. Mix in the cocoa powder, cornstarch, salt and vanilla extract.
  5. Gently fold in the chopped hazelnuts
  6. Pour into the pan and bake for 26-30 minutes. Let cool completely before serving


These brownies are MEGA fudgy, so clean your knife between each cut! Add any types of nuts you love!

Make sure to let your chocolate cool before adding the eggs, otherwise, the eggs will cook from the hot chocolate! 

You can make these brownies paleo by using coconut sugar.

Use parchment paper to line your baking pan to make it easier to get the brownies out.


  • Serving Size: 1 brownie
  • Calories: 227
  • Sugar: 22g
  • Fat: 12g
  • Saturated Fat: 7g
  • Carbohydrates: 21g
  • Fiber: 1g
  • Protein: 3g

Keywords: flourless brownies, gluten-free brownies, paleo brownies

If you tried these Flourless Fudge Hazelnut Brownies or any other recipe on the blog let me know how you liked it by leaving a comment/rating below! Be sure to follow along on PinterestInstagram and Facebook for even more deliciousness!