01 -
Preheat the oven to 410°F (210°C). Line a large baking sheet with parchment paper or lightly grease with olive oil spray.
02 -
In a large mixing bowl, combine ground beef, ground pork, breadcrumbs, milk, parmesan, egg, diced onion, minced garlic, chopped parsley or basil, salt, and black pepper. Mix until ingredients are just incorporated without overworking the mixture.
03 -
With lightly oiled hands, shape the mixture into meatballs approximately 1.5 inches in diameter and place them in a single layer on the prepared baking sheet, leaving space between each.
04 -
Bake meatballs in the preheated oven for 12 minutes, or until just cooked through. For optimal browning, broil on high for an additional 2 minutes.
05 -
While meatballs bake, heat olive oil in a large skillet over medium heat. Sauté diced onion until translucent, then add minced garlic and cook until fragrant. Stir in crushed tomatoes, tomato paste, Italian herbs, chili flakes, salt, black pepper, and sugar or baking soda. Simmer on low for 10 minutes, stirring occasionally.
06 -
Transfer baked meatballs and any pan juices to the marinara sauce. Simmer gently for 2-3 minutes to allow flavors to meld without overcooking the meatballs.
07 -
Plate meatballs with sauce. Serve over spaghetti, zucchini noodles, mashed potatoes, or alongside crusty bread as desired.