Salads with onion

1 medium red onion , sliced into 1/4-inch rings 1 hothouse cucumber , sliced in 1/3-inch thick half-rounds 2 vine-ripened plum tomatoes , cut into half-wedges[...]

Salad Ingredients 1 bag romaine lettuce 1 bag spring mix 2 cups grape or cherry tomatoes , halved 1 (15 oz) can garbanzo beans , rinsed and drained 1½ cups[...]