Preheat the oven to 350 °F and line an 8"× 8" square pan with parchment paper.
In a mixing bowl, combine the 1 1/4 cups almond flour, 2 tablespoons cornstarch, 1 cup Dutch-process cocoa powder, and 1/4 teaspoon salt.
In a second bowl, whisk the 3/4 cup butter, 1 cup honey, 2 teaspoon vanilla extract, and 3 large eggs until creamy.
Add the flour mixture to the egg mixture and stir with a spatula until combined. Do not mix with an electric mixer! Fold in the 3/4 cup chopped dark chocolate or chocolate chips.
Transfer the batter to your prepared pan and bake for 20-23 minutes. The center might be a little bit soft when taking it out of the oven, but it will continue to set when cooling down.
Allow the brownie to cool completely in the pan before slicing.
They will be gooey, but if you prefer them firmer, you may refrigerate for 3-4 hours before slicing.
Notes
You may use any other flour like oat flour.
Allow the brownies to cool completely before slicing.
You can leave them covered on the kitchen counter for up to 24 hours. Then store in a container in the fridge for up to 7 days.
You may use coconut oil in place of butter. The texture will change slightly.