A well-seasoned cast-iron skillet is a great non-stick surface to cook on. This type of skillet is not coated with any synthetic, harmful, materials. Before cooking your burger, get your cast iron skillet smokin hot. Add a little butter. (Butter Burger)
Season your hamburger patties to your liking. Salt and pepper work just fine too.
The meat will brown very evenly and nicely because of how the cast iron distributes and holds it heat.