Step 1

Cook macaroni to al dente according to package directions, drain and rinse. Transfer to large bowl, let cool.

Step 2

While macaroni cooks and cools, chop red onion, bell peppers, parsley and dice carrot, set aside.

Step 3

Add red onion, bell peppers, parsley, carrot, mayonnaise, mustard and salt and pepper to macaroni. Mix well, refrigerate until cool. Serve cold or at room temperature.