1 pound lean ground beef (could sub with half ground pork)
1 large egg (beaten)
1/4 cup breadcrumbs
1/4 cup grated parmesan cheese
1/4 cup finely chopped onion
2 teaspoons minced garlic
3/4 teaspoon kosher salt
1/3 teaspoon black pepper
2 Tablespoons Chopped fresh Italian Flat leaf parsley
STEP - 1
In a small bowl, stir bread crumbs with milk until evenly combined. Let sit 15 minutes, or while you prep other ingredients.
STEP - 2
In a large bowl, use your hands to combine beef, pork, sausage, onion, and garlic. Season with salt and pepper, then gently stir in bread crumb mixture, eggs, Parmesan, and parsley until just combined. Form mixture into 1" balls.
STEP - 3
In a large high-sided skillet over medium heat, heat oil. Working in batches, sear meatballs on all sides to develop a crust. Set meatballs aside, reduce heat to medium-low, and add sauce to skillet. Bring sauce to a simmer then immediately add meatballs back to skillet. Cover and simmer until cooked through, about 8 minutes more.