Preheat the broiler. Line a rimmed baking sheet with parchment paper. In a large mixing bowl, combine the pork, cheese, almond flour, apple, onion, parsley, egg, and season with garlic powder and pepper. Shape into 12 large meatballs and arrange on the baking sheet. Broil the meatballs until golden and cooked through, 10 minutes.

Let cool for 5-10 minutes before serving, they firm up more. Let cool completely before freezing.