Three bean salad can be made in a quick couple of minutes. Best of all this recipe tastes even better the second day.
Make the dressing by combining the vegetable oil, vinegar, sugar, and salt in a bowl. Stir until well blended. Place wax beans, green beans, kidney beans, celery, and chopped onion in a medium-sized bowl. Pour dressing over beans. Stir to combine dressing and the beans. Chill overnight before serving.