To make the sauce, place all the ingredients in a small bowl and mix to combine.
Season with salt and black pepper to taste and set aside.
Preheat oven to 350°F.
Line a baking sheet with parchment paper. Set aside.
In a large bowl place the ground beef, almond flour, onion, garlic, egg, tomato paste, soy sauce (if using) heavy cream, parsley, dried thyme, oregano, feta cheese and salt and black pepper to taste.
With clean hands, mix the ingredients until well combined.
Place the meat mixture on the prepared baking sheet and form into a loaf.
Spread half of the prepared sauce over the top of the meatloaf.
Roast the meatloaf for 45 minutes.
Remove the meatloaf from the oven and brush with remaining sauce.
Bake for another 10-15 minutes.
Remove the meatloaf from oven and let stand for 15 minutes.
Cut and serve.