Tomato, Cucumber and Vidalia Onion Salad

2/3 cup sugar
2/3 cup apple cider vinegar
Salt and freshly ground pepper, to taste
1 Tbsp chopped fresh parsley
1 cup vegetable oil
3 cucumbers, peeled and cut int 1/4" thick slices
5 Roma tomatoes, each cut into 8 slices
1 large Vidalia onion, peeled and cut into rings

 In a mason jar, combine the sugar, vinegar, parsley, salt and pepper.  Shake vigorously to combine.  Add oil; seal and shake until combined.  

In a large mixing bowl combine cucumbers, tomatoes and onion rings.  Pour in dressing and toss to coat evenly.  

Cover and refrigerate until serving.