01 - Heat olive oil in a skillet over medium heat. Add ground beef and cook, breaking it apart with a wooden spoon, until evenly browned, about 5 to 6 minutes. Drain excess fat.
02 - Add taco seasoning and 1/4 cup water to the browned beef. Stir and simmer for 2 to 3 minutes, until well combined. Remove from heat and let cool slightly.
03 - In a large salad bowl, combine chopped romaine lettuce, cherry tomatoes, red onion, black beans, corn, and shredded cheddar cheese.
04 - Add the taco-seasoned beef and crushed Doritos to the salad mixture.
05 - Drizzle with ranch or preferred dressing, then toss thoroughly until all ingredients are evenly coated.
06 - Serve the salad right away to enjoy the full Doritos crunch.