Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a microwave-safe bowl, combine the shredded mozzarella cheese and almond flour. Heat it in the microwave in 20-30 second intervals, stirring in between, until the cheese is fully melted and well combined with the almond flour.
Add the baking powder and the egg to the melted cheese mixture. Mix until you have a smooth dough.
Roll the dough out between two sheets of parchment paper to about ¼-inch thickness.
Use a round cookie cutter or a glass to cut out small circles from the dough. Put each circle in a mini muffin tray to form a little basket
Place a small cube of Brie cheese into each dough basket. Bake in the preheated oven for about 8 minutes or until the dough is golden brown..
Remove the mini muffin tray from the oven and use a small spoon to create a small well in each baked dough basket.
Spoon a small dollop of sugar-free cranberry sauce into each well, and top it with a little more Brie cheese.
Return the mini muffin tray to the oven and bake for an additional 3 minutes, or until the Brie cheese is slightly melted.
Remove from the oven and let them cool for a few minutes before serving.