Green Bean and Onion Salad Recipe

1. Simmer onions and beans in 1 inch of stock in a covered saucepan (about 15-18 minutes). Drain, refrigerate covered until chilled (about 2 hours).
2. Mix remaining ingredients except salt, pepper, and lemon juice; refrigerate covered until chilled.
3. Arrange vegetables on a platter; sprinkle lighlty with salt and pepper. Squeeze lemon juice over. Spoon sauce over or pass sauce seperately.