01 - Heat olive oil in a skillet over medium heat. Add ground beef and cook, breaking it apart, until thoroughly browned, approximately 5 to 6 minutes. Drain excess fat from the pan.
02 - Sprinkle taco seasoning over the cooked beef, then add 1/4 cup water. Stir and simmer until the sauce thickens, around 2 to 3 minutes. Remove skillet from heat and allow the seasoned beef to cool slightly.
03 - In a large salad bowl, combine chopped romaine lettuce, halved cherry tomatoes, finely diced red onion, black beans, corn kernels, and shredded cheddar cheese.
04 - Add the slightly cooled taco beef and the crushed Doritos chips to the bowl with the vegetables and cheese.
05 - Drizzle the salad with ranch or chosen dressing. Gently toss the mixture until all ingredients are evenly coated and distributed.
06 - Serve the salad immediately to maintain maximum Doritos crunch.