I first had this years ago when I was doing Weight Watchers, and it was fabulous (and 0 points!). I'd lost the recipe, and failed when trying to recreate it a few times over the years. I think I finally did it though! Yay!
1 English Cucumber, thinly sliced
1/2 of a large red onion, thinly sliced
1 c red wine vinegar
1/2 c water
1 c sugar (to make it 0 WW points, use Splenda)
1/2 to 1 T red pepper flakes (depending on the amount of heat you're after!)
1 to 2 T salt
Bring the vinegar, water, and sugar to a boil, stirring to make sure the sugar dissolves. Stir in the red pepper flakes and salt, and pour the hot mixture over the cukes and onion. Stir. Put in the fridge to chill for at least an hour before serving, and stir a few times in that hour.
I think this would be awesome over a white fish (tilapia maybe?) for a light dinner!
Some variations I've seen that I'm anxious to try:
1) Instead of red wine vinegar, use white vinegar, and sub dried dill for the red pepper flakes.
2) Rachel Ray's Quick Pickled Onions and Apples sounds interesting--and somewhat similar--too!