In a bowl combine the mozzarella, cream cheese and butter. Microwave on high for 1 minute to melt (alternatively heat over a double boiler or in a small saucepan directly on the heat to melt).

Stir cheeses and butter together.

In a third small bowl combine the egg, flax meal and water. Beat to combine.

Preheat oven to 400 F. Line a baking sheet with parchment paper.

Combine melted cheeses, almond flour and egg and flax mixture in the bowl of a stand mixer. Beat for 1-2 minutes, until everything is incorporated. You can mix everything together by hand as well.

Wet your hands and gather the dough. Divide into 6 parts and roll into balls.

Place on the baking sheet and flatten slightly. Top with sesame seeds (optional).

Bake for 12 minutes until golden.