Combine the beaten egg, tomato paste, grated onion, garlic, parsley, oregano, salt, pepper, and almond flour. Mix well and then mix in the meat.
Preheat the oven to 400º.
Heat a nonstick skillet over high heat and enough of the olive oil to coat the skillet. Using a medium or large ice cream/cookie scoop*, scoop out the meatballs and drop them directly into the pan. Let them cook for about 30 seconds or until brown, then flip them over using a spoon (I found this was the easiest in order to keep them intact). Cook them until brown on the other side, about 30 seconds, and then transfer to a baking sheet lined with parchment or foil. Repeat with remaining meat – you’ll end up with about 18-20 meatballs using a large scoop, and about 30-35 with a medium scoop.
Transfer the meatballs to the oven and bake for about 20 minutes for the large size, or 15 minutes if you used a medium-sized scoop. The meatballs will be firm to the touch when finished.
Serve with tomato sauce.
