A quick and easy summer side salad featuring crisp cucumbers, juicy tomatoes, and softened red onion tossed in a light olive oil and vinegar dressing.
Soak red onion slices in cold water for 10 minutes to mellow sharpness. For less watery salad, sprinkle cucumbers with salt and drain before mixing. Add dressing just before serving. Store dressing separately if making ahead.
Keywords: cucumber salad, tomato salad, red onion salad, summer side dish, easy salad, fresh salad, healthy salad