In a large bowl, combine the ground beef, breadcrumbs, Parmesan cheese, pesto sauce, garlic powder, onion powder, Italian seasoning, black pepper, salt, egg, and milk. Mix until well combined.
Form the mixture into 1-inch meatballs and place on a baking sheet lined with parchment paper.
Bake for 15 minutes, or until cooked through.
Remove from oven and top with mozzarella cheese.
Return to oven and bake for an additional 5 minutes, or until cheese is melted and bubbly.
Serve warm with your favorite sides.
Interesting Facts
Pesto sauce is made with fresh basil, garlic, olive oil, pine nuts, and Parmesan cheese.
Ground beef is a versatile ingredient and can be used in a variety of dishes.
Mozzarella cheese is a mild, fresh cheese that melts easily and adds a creamy texture to dishes.