Mix all of the ingredients together with a spoon except for the egg and ground beef. Then gently mix in the egg and beef by hand.
½ cup (2.5 ounces) tortilla chips, crushed, ½ cup (2 ounces) cheddar cheese, grated, ½ cup salsa, ¼ cup sour cream, 1 teaspoon cumin, 1 teaspoon salt, ¼ teaspoon chili powder, ¼ teaspoon oregano, ¼ teaspoon sweet paprika, ¼ teaspoon black pepper, 1 egg, lightly beaten, 1 pound lean ground beef, ¼ cup chopped cilantro