Place the ground beef, egg, salsa, sour cream, taco seasoning, tortillas chips, ½ cup of the shredded cheese and salt to taste in a mixing bowl. Knead with your hands until well combined.
Form the meat mixture into a loaf shape, and place into a 9x13 baking dish.
Bake for 60-70 minutes.
Top with more shredded cheese, chopped tomatoes and green onions.
Cover lightly with tented aluminum foil until the cheese has melted before serving.