Bake at 325 degrees Fahrenheit.
Using parchment paper, line an 8x8 baking pan. Cut two 8-inch-wide pieces of paper. To construct a sling for simple removal after baking, cross them in the baking dish.
Butter should be simmering and allowed to brown in a medium saucepan. frequently stir. That will take around five minutes. Put aside for cooling.
Combine almond flour, coconut flour, brown sugar, gelatin, and baking powder in a sizable basin. Be sure to thoroughly combine.
With hand mixers, combine the vanilla and eggs.
Put cold butter gradually. Beat(hand mixer).
Finally, stir in the chocolate chunks.
When the edges are just beginning to turn golden brown, pour the batter into the prepared baking dish, sprinkle with flake salt, and bake for 25 to 28 minutes.