Step 1

For the meatballs: Preheat the oven to 450 degrees F.

Step 2

Combine the ground meats in a large bowl. In a smaller bowl, combine the breadcrumbs and milk to soak.

Step 3

In a blender or food processor, combine the onion, basil, parsley and garlic into a thick puree. Add to the ground meats. Add the milk and breadcrumbs, cheese, salt and egg to the meat. Knead together until combined. Scoop into 2-ounce balls (about 1 1/2 inches) on a baking sheet lined with foil or parchment.

Step 4

Bake until browned, about 10 minutes.

Step 5

For the sauce: Lower the oven to 350 degrees F.

Step 6

Mix the tomatoes together with the salt in a casserole dish, then add the roasted meatballs. Cover with foil and bake, 1 hour.

Step 7

For spaghetti: Bring at least 6 quarts salted water to a boil. Cook the spaghetti according to the package directions. Place in a bowl and top with meatballs, sauce and grated parm.