Pre Heat oven to 400 F. Melt the shredded mozzarella and the cream cheese in a non stick frying pan over medium heat. (This step can also be done in a microwave) Remove from the heat, then stir the melted cheeses until they’re well combined. Using a mixing bowl, add the almond flour, coconut flour, baking powder, xanthan gum and eggs to the cheese mixture. Mix until very well combined.
Between 2 pieces of parchment paper, press the dough into a rectangle. Approximately 10 ” x 8″. Remove the top piece of parchment paper, then poke some holes in it with a fork. Brush with 2 tbsp of the melted butter. Then sprinkle with 1 tsp of garlic powder. Bake for 8 - 10 minutes, or until golden brown.
Remove from the oven, then cut into 1/4 ” squares. Over medium heat, melt the remaining butter in a large frying pan. Add the remaining garlic powder to the melted butter, then place the bread squares into the pan. Stir until all the pieces are well coated with butter. Brown for approximately 5 minutes, stirring as it cooks.
Spread a fresh piece of parchment paper on top of a cookie sheet. Then spread the croutons evenly on the pan. Leave as much space between them as possible. Bake for 16 - 18 minutes, or until they're golden brown and crunchy. Turn them once or twice throughout baking.