In a large mixing bowl, combine ground beef, bread crumbs, grated Parmesan cheese, chopped parsley, finely chopped onion, minced garlic, egg, milk, salt, and pepper.
Shape the mixture into meatballs of your desired size. Place them on a baking sheet lined with parchment paper
Preheat your oven to 190°C and bake the meatballs until they are browned.
In a large skillet, heat olive oil over medium heat, add tomato sauce, crushed tomatoes, dried oregano, dried basil, salt, and pepper and stir.
Add the baked meatballs to the skillet with the tomato sauce
Garnish with additional grated Parmesan cheese and chopped parsley
Put the pasta in a dish and pour the cheesy mixture
Sprinkle on top the remaining parmesan and oregano, then bake for 15-20 minutes to set the top
Scatter over the last basil and reserved parmesan, then serve with salad