In a large bowl, toss together the ground beef or turkey, breadcrumbs, grated Parmesan cheese, egg, minced garlic, and Italian seasoning.

Use your hands to gently combine the mixture until all ingredients are integrated.

With your hands, take spoonfuls of the mixture and roll them into small meatballs, about 1 inch in diameter.

Heat a bit of oil in a pan over medium heat. Cook the meatballs for about 10-12 minutes, turning occasionally, until they are nicely browned.

Place the meatballs on a plate and ladle warm marinara sauce over them.