In a large skillet over medium heat, add the pound of lean ground beef. Cook until browned, breaking it up with a spatula as it cooks. This should take about 5-7 minutes.
Once the beef is browned, drain any excess fat if necessary. Stir in the taco seasoning mix and half a cup of water. Allow it to simmer for about 5 minutes until the mixture thickens and is well combined.
While the beef is cooking, chop the romaine lettuce and dice the tomato. Set them aside in a large mixing bowl.
Once the beef is done, let it cool slightly before adding it to the bowl with the chopped lettuce and diced tomato.
Sprinkle the shredded cheddar cheese over the salad mixture, followed by the slightly crushed Doritos. The crunch of the Doritos is what makes this salad so delightful!
Drizzle your light salad dressing over the top of the salad. Toss everything together gently until well combined.
Serve immediately in bowls or on plates, garnishing with additional Doritos or cheese if desired. Enjoy your delicious Doritos Taco Salad!