Add 1 tablespoon olive oil to a non-stick frying pan and sauté the onions for 3 - 4 minutes until soft. Add the garlic for 1 minute until fragrant.
Add ground beef and pork to a bowl with the cooked onion as well as all other the ingredients (egg, parsley, , tomato puree, Italian seasoning, paprika, salt and pepper.) Mix with clean hands until well combined.
Rub your hands with olive oil. Roll the mixture into 24 meatballs and place on a parchment lined baking tray or oiled air fryer basket. Spray with olive oil.
Oven - Preheat the oven to 400F/ 200C and bake for about 20 minutes or until cooked to your liking. Drizzle in oil to serve.
Air fryer Preheat the AF to 370F / 190C. Add oiled meatballs to AF basket and cook for 10 - 12 minutes until cooked through.
Warm marinara sauce in a pan. Toss meatballs through sauce and top with more parmesan, fresh parsley. Option to serve with spaghetti or pasta of choice.