In a large mixing bowl, combine beef, Nacho Cheese Dip Seasoning, breadcrumbs, Burgers Seasoning, and egg.
Use your hands to thoroughly mix the ingredients. The mixture should hold together well, but not be sticky. Chill mixture in fridge for 15 minutes. Divide mixture into 4 one-quarter lb (113 g) portions (try using Epicure Burger Press).
Heat frying pan over medium-low heat. Cook each patty 4–6 minutes per side (flip patties, then top with mozzarella), until no longer pink in centre and the patties are slightly browned.
Spread your choice of condiment on buns and top with lettuce, onion or tomato.