This classic Three Bean Salad is the ultimate "pantry staple" recipe. It’s colorful, protein-packed, and actually tastes better the longer it sits, making it the perfect candidate for meal prep, summer potlucks, or a quick healthy side dish!
In a large bowl, mix the beans, the celery, onion, and parsley.
In a separate small bowl, whisk together the vinegar, sugar, olive oil, salt, and pepper. Add the dressing to the beans. Toss to coat.
Transfer the salad to the refrigerator for several hours, to allow the beans to soak up the flavor of the dressing. Let come to close to room temperature to serve.