Step 1

Cook the pasta according to package directions, drain and rinse with cold water. Set aside. In a large bowl, stir together the mayonnaise, mustard, vinegar, sugar, salt, onion, and celery seeds.

Step 2

Add the pasta to the bowl and stir well to coat. Add the coleslaw mix and toss to combine thoroughly. Serve immediately or refrigerate until ready to serve. Toss again before serving.