Step 1

In a saucepan of boiling water, cook green beans, uncovered, until crisp-tender, 3-5 minutes. Remove beans with a slotted spoon; drop immediately into ice water. Drain and pat dry.

Step 2

Place cucumber, red pepper, onion and beans in a large bowl. Whisk together dressing ingredients; toss with vegetables. Refrigerate, covered, until cold.