Step 1 – Cook the Pasta:
Bring a large pot of salted water to a boil. Add 8 ounces of rotini pasta and cook according to package instructions until al dente (firm but tender). Drain and rinse under cold water. Set aside.

Step 2 – Prepare the Taco Meat:
In a large skillet over medium heat, cook 1 pound of ground beef for 8–10 minutes until fully browned. Drain any excess fat. Add 2 tablespoons of taco seasoning and 2–3 tablespoons of water, then stir to coat evenly. Cook for 1–2 more minutes and set aside to cool slightly.

Step 3 – Combine Ingredients:
In a large mixing bowl, combine the cooled pasta, cooked taco meat, jalapeño, diced Roma tomato, corn, red bell pepper, yellow onion, and shredded cheddar cheese.

Step 4 – Add Dressing:
Pour 1 cup of Catalina dressing over the mixture and toss until everything is evenly coated.

Step 5 – Add Crunch & Serve:
Just before serving, fold in the slightly crushed Doritos. Top with additional Doritos and diced iceberg lettuce for garnish, if desired. Serve immediately.