Step 1

Place the onion in a bowl and cover with the vinegar. Refrigerate until you are ready to mix the pasta salad-at least 30 minutes.

Step 2

Cook the pasta according to package directions. Drain and rinse with cold water. Set aside until cool.

Step 3

Remove the yolks from the hard-boiled eggs (save the whites for another use, or have a snack). Mash the yolks. Combine the mashed yolks, mayonnaise, sour cream, dry mustard, and seasoned salt.

Step 4

Place the cooled pasta into a large bowl and add the pickles, cheese, celery, and bell pepper. Drain the onion and add to the bowl. Pour the dressing over and mix to combine. Adjust seasonings. Chill until ready to serve.