Ingredients
2 pounds large yellow or white onions, thinly sliced
2 large shallots, thinly sliced (about 6 ounces total)
4 sprigs thyme
1/4 cup olive oil
Kosher salt and freshly ground black pepper
1 cup dry white wine
2 tablespoons Sherry vinegar
2 cups sour cream
1/4 cup minced fresh chives
1/4 cup plain whole-milk Greek yogurt
2 teaspoons onion powder
Preparation
Preheat oven to 425°F. Mix onions, shallots, thyme sprigs, and oil in a large roasting pan. Season with salt and pepper.
Roast onion mixture, stirring and scraping down sides of pan every 10 minutes, until mixture starts to break down and turn golden brown, 45-55 minutes
Test
