Slice the red onion into half moons. Peel and slice the cucumber into about ¼-inch slices. Set aside.
In a medium bowl, combine the remaining ingredients. Mix well. Taste and add salt as needed. (you will not need as much if you opt to salt the cucumbers first to reduce the water)
Add the onion and cucumber. Stir or toss to coat. Enjoy!
Notes
If you like a bit of sweetness to your creamy cucumber salad, you can add 1 tablespoon granulated sugar to the dressing mix.
If you don’t have garlic on hand, a ½ tablespoon of garlic powder will do the trick.
I do not suggest storing this. Once the dressing mixes with the vegetables, serve it right away for the best results. To make ahead, simply mix the dressing and slice the veggies and keep stored separately. Combine when ready to serve.