In a large bowl add the almond flour, ground flax seed, sugar and brown sugar substitute, and baking powder. Whisk everything together. Then, add the melted unsalted butter, eggs, and vanilla extract into the dry mixture. Mix everything together.
Spray 6 of the muffin reservoirs of a muffin tray with cooking spray and add the muffin batter about 3/4 of the way.
Bake for about 15 minutes give or take. Edges should be golden, peaks stiff, and toothpick through the center should come out clean.
Let them cool before removing. They’re very moist, using a butter knife or spoon may help to scoop them out.
Feel free to use muffin liners instead of cooking spray.