Brown ground beef and onion in a skillet until beef is cooked through. Drain excess grease, if needed. Add black beans, green chiles, salsa and taco seasoning. Stir well to combine.
1 # ground beef, 1 cup yellow onion, 1 15 oz. can black beans, 1 4 oz. can chopped green chiles, 1 cup salsa, 1 packet taco seasoning