Melt the mozzarella and cream cheese together. I do this using a double boiler, you can also do this in the microwave.
Stir and fold to combine these ingredients.
In a small bowl, mix the almond flour, baking powder, salt and psyllium husk.
Add to the bowl of melted cheese, along with an egg.
Fold everything together and combine as thoroughly as possible.
Form your dough into a ball and place in the fridge for 10 minutes.
Preheat the oven to 400F and line a baking sheet with parchment paper.
Remove dough from fridge and form into four even buns.
Place buns on the parchment paper and top with sesame seeds, gently pressing them in to adhere.
Bake for 15 minutes, or until the outside is golden.
Allow them to cool on the baking sheet before slicing, and enjoy!