Edie's Patatosalata

From: AllRecipes

Red potato salad with a light oil, vinegar, and herb
   dressing. No mayonnaise. My kids love it! If you like, you can
   leave the skins on the potatoes for a more colorful dish.
   Prep Time: approx. 15 Minutes. Cook Time: approx. 30
   Minutes. Ready in: approx. 45 Minutes. Makes 4 to 6 servings.

1/2 cup extra virgin olive oil
3 tablespoons red wine vinegar
1 teaspoon dried oregano

1 red onion, thinly sliced
5 large red potatoes
2 tablespoons chopped fresh parsley

Directions
1 In a small bowl, combine olive oil, wine vinegar,
   oregano, parsley, and onion. Mix and set aside.
2 Add potatoes to a large pot of boiling, lightly salted
   water. Boil for about 20 minutes, or until potatoes are
   tender. Drain water and let cool.
3 When cooled, peel and dice. Place in a large bowl, add
   dressing and season with salt and pepper to taste. Toss to
   coat, cover bowl and refrigerate for several hours or overnight.