Roasted Onion Salad with Arugula and Walnut Salsa

Name: Roasted Onion Salad with Arugula and Walnut Salsa
Ingredients: For the salad:; 4 medium red onions; 1 1/2 tablespoons olive oil; 1 cup arugula (Not to be a snob, but if you can find arugula at your farmers market, I promise that it will be ten times better than the boxed stuff. Prettier, too.); 1/2 cup flat-leaf parsley leaves; 2 ounces soft goat cheese, broken into 1/2- to 1-inch chunks; Flaky salt and freshly cracked black pepper; For the walnut salsa:; 2/3 cup walnuts, coarsely chopped (make sure they're not bitter or rancid, okay?); 1 fresh red chile (e.g. Thai bird's eye), seeded and finely chopped; 1 clove garlic, minced; 3 tablespoons red wine vinegar; 1 tablespoon olive oil; salt