In a large mixing bowl, stir together bread crumbs and milk, adding more milk 1 tablespoon at a time until fully moistened. Let rest for at least 5 minutes.

Add ground beef, pork, eggs, onion, garlic, basil, parsley, oregano, Parmesan cheese, salt, and pepper to the bread crumb mixture. Gently toss to combine until ingredients are evenly mixed.

Shape mixture into 38g (1.25-inch) meatballs with greased hands.

Choose your preferred cooking method: bake or fry. For baking, preheat oven to 400°F, grease pans, and bake for about 10-12 minutes until browned. For frying, heat olive oil in a skillet over medium heat and cook in batches until golden brown, about 4-6 minutes per side.

Transfer cooked meatballs into warmed marinara sauce and simmer on low heat for 10-20 minutes for tender, flavorful meatballs.