Melt the butter and let it turn a golden brown.
Don't let it burn!
Let the butter cool so that it is just comfortably warm to the touch.
Preheat the oven to 325F.
Grease a small, square baking dish - about 6x6-inches
Blend the almond flour, cocoa, whey protein, sweetener, baking powder and salt together.
Set aside.
Beat the melted butter, egg, sugar free syrup, and vanilla together until well mixed.
Add the almond flour mixture to the egg mixture, stirring until smooth.
Fold in the pecans.
Spoon into prepared baking dish and bake for 15 to 20 minutes.