Preheat oven to 350°F
Combine the almond flour, xanthan gum, baking powder, egg white protein powder and salt in a large mixing bowl.
In another bowl combine 1 egg with apple cider vinegar, cream cheese and warm water. Whisky until frothy, about 2 minutes.
Add the wet mixture to the dry mixture and combine using a wooden spoon or spatula until well combined and doughy.
Form the dough with your hands into a ball and then divide into 4
Form into a ball and then flatten with your hands to shape into a hamburger bun. About ¾ inch thick.
Place on a parchment lined baking sheet.
In a small bowl whisk together the 1 egg with the 1 tablespoon of water
Brush the egg wash onto each bun and top with a sprinkle of sesame seeds
Using a sharp knife score a cross into the top of the buns. Do not score too deep. This will help the buns rise a bit.
Bake in oven for 25-30 minutes or until lightly golden. Do not over bake.
Allow to completely cool before slicing into the buns.