Peel and slice 1/2 medium red onion into thin slices and add to a deep mixing bowl.
Rinse and drain 1 1/2 cups white cannellini beans and add to onions.
Trim 12 oz French green beans tip to tail, place in a microwave safe dish, rinse under cold water, cover with cling wrap and microwave on high for 1-2 minutes, until crisp tender.
Drain green beans and run under cold water until the beans cool off.
Add cooked green beans to sliced onions and dressing
Wash 1 lb cherry tomatoes, cut in half, and add to bean mixture and gently mix until well combined.
Drain 12 oz marinated artichoke hearts, cut into smaller chunks and add to bean mixture.