One of my favorite recipes to bring to get-togethers and family gatherings is my lemon mustard pasta salad. I make it often for side dishes for dinner, and its just a light and delicious pasta salad. It's citrus-y, sweet, salty, soft, and crunchy all at the same time!
You can make substitutions and additions. Some people like olives or capers in their pasta salads, some people hate onions, etc.
It's very easy to make - it probably takes about 20 minutes to finish and about an hour to chill in the fridge.