01 - In a large skillet over medium heat, cook the ground beef until well browned, breaking it up with a wooden spoon. Drain off any excess fat.
02 - Add taco seasoning and water to the skillet with the browned beef. Stir to combine, then simmer for 2 to 3 minutes until the mixture thickens. Remove skillet from heat and allow beef to cool slightly.
03 - In a large salad bowl, combine chopped romaine lettuce, halved cherry tomatoes, diced red onion, black beans, corn, and shredded cheddar cheese.
04 - Transfer the slightly cooled beef mixture to the salad bowl with the prepared vegetables and cheese.
05 - Just before serving, incorporate the crushed Doritos and drizzle with your choice of ranch or Catalina dressing. Toss gently to evenly distribute all ingredients.
06 - Serve immediately while the chips retain their crunch.