Place eggs into a mixer. On medium high, mix until you have a light and airy consistency like shown in the video. This will take between 3 and 4 minutes.
Next, add in your hazelnut spread and mix on medium high until all combined.
Line a loaf pan with parchment paper, bake on 350°F for 30 to 35 minutes.
Place on baking rack and allow to cool for 20 minutes before removing from pan.
Notes
Top tips:Use high-quality chocolate hazelnut spread like Nutiva. Brownies are all about the chocolate, so it's important to use good quality chocolate that you love. If you are not concerned about dairy or sugars, Nutella also works great in these bars.Nutrition: Nutrition information is automatically calculated and should only be used as an approximation. The owner of this site is not responsible for nutrition facts.