Step 1

Bring a pot of water to a boil and cook rotini until it is just past al dente.

Step 2

Drain into a colander and rinse with cold water until pasta is cool.

Step 3

Set pasta aside and allow to dry for about 30 minutes.

Step 4

While pasta is cooking, combine mayonnaise, buttermilk, ranch dressing mix, and season salt in a large bowl and mix until combined.

Step 5

Add in frozen peas and stir. The peas will thaw a bit during mixing and will finish thawing while pasta cools.

Step 6

Add ham and cool, dry rotini and mix until well blended.

Step 7

Can be eaten immediately, but flavors will improve by placing into the refrigerator for at least 4 hours.