But are you eating the pasta salad pretty much immediately? Have you ever refrigerated it overnight? My old gluten recipe, I made the pasta salad the day before so that all the ingredients/dressing/flavors would meld.
Usually, I make it in the a.m. For dinner at night. We find the next day it's starts to fall apart but still tastes good. My parents were eating it for 2 days and thought it was good the second day. Another of my sneaky plans to get more calories in my mom- used full fat and oil Italian dressing on hers and extra salami.