Preheat the oven to 350F (175C) and line an 8” by 8” brownie pan with parchment paper.

In a heat-proof bowl, place the chocolate and butter. Heat in the microwave in short increments, mixing in between until fully melted.

Add the white and brown sugar and mix well. The mixture will appear greasy, but that’s okay.

Then, add the egg and mix. The mixture will become smooth and homogenous.

Add the dry mixture and mix until no dry ingredients are left.

Fold in the nuts and pour the mixture into the prepared pan.

Spread evenly and bake for 25-30 minutes or until the center has set. Can be just a little bit jiggly. If it browns too much, cover loosely with a piece of foil and keep baking until done.

Remove from the oven and let it cool down to room temperature in the pan. Then, transfer into the fridge for one hour to set.

Remove from the fridge, cut into 9 even squares, and serve.