Begin by bringing a large pot of salted water to a rolling boil. Add in the rotini pasta and cook until al dente, about 8-10 minutes. Drain the pasta and rinse under cold water.

In a large skillet over medium-high heat, add the ground beef and cook until no longer pink, about 5-7 minutes. Drain excess fat and stir in taco seasoning.

In a big mixing bowl, combine the cooked rotini pasta, seasoned ground beef, cherry tomatoes, green onions, and shredded cheese, folding gently to mix.

Pour the Catalina dressing over the mixture and stir until well combined.

If time allows, chill in the refrigerator for about 15 minutes; otherwise, serve immediately.

Just before serving, fold in the crushed Doritos for crunch.