In a large mixing bowl, add the ground beef, egg, heavy cream, Parmesan, almond flour, parsley, onion, garlic, and spices.
Mix until the ingredients are well-combined.
Roll into 12 – 14 meatballs and place on a clean plate.
Place the meatballs in the refrigerator for 20 minutes.
To cook the meatballs in the oven, bake them at 390°F (200°C) for 15 – 20 minutes until cooked through and browned, then transfer to a pan. To pan-fry, cook them in a skillet over medium-high heat for 20 minutes, turning halfway, until cooked through.
Pour the marinara sauce over the meatballs and continue to cook over medium heat until the sauce is heated.
Garnish with fresh parsley and serve.