Aunt Peggy’s Cucumber, Tomato and Onion Salad

I've made similar salads but they use more oil, vinegar and often sugar. This one was perfect with only one tablespoon each of olive oil and vinegar along with some salt and pepper. When I tasted of it at first I though it didn't have enough dressing but after the 10 minute marinating time it was perfect. I'll be making this on again. Loved the sweet onion in this one along with the cucumbers and tomatoes. I had a variety of heirloom tomatoes, both cherry and pear so I chopped some of the pear ones to go along with the cherry halves. I also like the addition of flat leaf parsley that I haven't seen in most salads like this.