Cook the Beef: In a large skillet over medium heat, add 1 pound of ground beef. Cook for about 8-10 minutes until it’s browned and no longer pink. Use a spatula to crumble the meat as it cooks.
Add the Taco Seasoning: Sprinkle 2 tablespoons of taco seasoning over the cooked beef. Stir well to combine and allow the mixture to heat for an additional 2-3 minutes. Turn off the heat and set aside.
Prepare the Pasta: While the beef is cooking, boil water in a large pot. Add 8 ounces of rotini pasta and cook according to package instructions until al dente. Drain the pasta and rinse under cold water to stop the cooking process.
Mix the Salad: In a large mixing bowl, combine the cooked rotini, 1 medium jalapeño (seeded and finely diced), 1 medium Roma tomato (finely diced), 1 can of corn kernels (drained), ½ cup of finely diced red bell pepper, ½ cup of diced yellow onion, and 2 cups of shredded mild cheddar cheese. Add the taco meat and 1 cup of Catalina dressing. Mix gently until all ingredients are well incorporated.
Finish with Doritos: Just before serving, add the slightly crushed Nacho Doritos to the salad, reserving some for topping. Toss gently to combine.
Garnish and Serve: Transfer the salad to a serving platter and sprinkle with additional crushed Doritos and optional diced iceberg lettuce for garnish. Serve immediately for the best texture!