Prepare ingredients: Gather ground beef, breadcrumbs, Parmesan, egg, garlic, herbs, salt, pepper.
Mix the meatball mixture: In a large bowl, combine ground beef, breadcrumbs, Parmesan, egg, garlic, parsley, salt, and pepper.
Mix until just combined, being careful not to overwork the meat.
Shape the meatballs: Use your hands or a small scoop to roll the mixture into evenly sized meatballs.
Brown the meatballs: Heat olive oil in a skillet over medium heat. Add the meatballs in batches and brown them on all sides (about 2 minutes per side). This makes them crispy but also maintain moisture.
Simmer in sauce: Add the browned meatballs to a simmering marinara for 15-20 minutes.
Serve: Let the meatballs rest for a few minutes, then serve with pasta, in a sub, or as appetizers with dipping sauce.