In a large serving bowl, add in all your beans and olives.
Chop the celery, onion and bell pepper, then add them to the same bowl.
In a small bowl add all marinade/dressing ingredients. Whisk well to emulsify, then drizzle it all over the bean salad.
Toss well to combine.
Cover your bowl with plastic cling wrap and refrigerate for 1 hour prior to serving, or overnight.
Enjoy!