9 tablespoons unsalted butter
1/2 cup xylitol or erythritol sweetener
3/4 cup cocoa powder
1/2 teaspoon salt
1 teaspoon vanilla
2 eggs
1 cup almond flour
1/2 teaspoon baking powder
Heat the oven to 350°F.
Add the butter and sweetener to a double boiler, and mix until the butter has fully melted and the sweetener has dissolved.
Add the cocoa powder and salt. Stir constantly until the mixture is glossy.
Remove the mixture from the heat, and add the vanilla.
Allow to cool 2 to 3 minutes before adding the eggs, one at a time, whisking after each.
Add the almond flour and baking powder. Mix well.
Transfer the mixture to an 8-by-8-inch brownie pan lined on the bottom with parchment paper and coated with cooking spray.
Bake for 15 to 25 minutes, or until the center has set, but a toothpick inserted comes out with several crumbs attached.
Allow to cool before slicing into squares and serving.