Step 6: Cook the Rotini Pasta - When your chicken is nearly finished, bring a
large pot of water to a boil. Add the rotini and cook according to the package directions until the pasta is tender but still has a little bite. Remember that the pasta will continue absorbing some sauce after you add it to the crockpot, so you do not want to cook it until it becomes overly soft. Drain the pasta well, but do not rinse it. A little starch left on the noodles helps the creamy sauce cling to them.