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In a large bowl, combine pork*, panko, stock concentrates, half the Mexican Spice Blend, and ¼ tsp salt (all the Mexican Spice Blend and ½ tsp salt for 4). Form into two patties (four patties for 4), each slightly wider than a burger bun.
Drizzle oil in a hot large, preferably nonstick, pan. Add patties and cook until browned and cooked through, 3-5 minutes per side. In the last 1-2 minutes of cooking, top patties with cheese; cover pan until cheese melts.