Tomato, Onion, and Cucumber Salad 5 medium plum tomatoes, halved lengthwise, seeded, and thinly sliced 1/4 red onion, peeled, halved lengthwise, and thinly sliced 1 Kirby cucumber, halved lengthwise and thinly sliced A generous drizzle of extra-virgin olive oil, about 2 tablespoons 2 splashes red wine vinegar Coarse salt and black pepper Dress the tomatoes, onions, and cucumber with olive oil, red wine vinegar, salt, and pepper. Let stand while you prepare dinner, about 20 minutes. Re-toss and serve salad with crusty bread for mopping up juices and oil. Back to Holiday food