Caramelized Onion and Shallot Dip- 2 lb yellow onions,sliced,2 shallots, sliced,some thyme,1/4 c olive oil, salt & pepper,1C white wine, 2 Tbsp Sherry vinegar,2C sour cream,1/4C mincedchives 1/4C Greek yogurt,2 tsp onion powder. Preheat oven to 425°. Mix onions, shallots, thyme sprigs, and oil. Season with salt and pepper.Roast onion mix for. 45–55 minutes.Discard thyme. Add wine & vinegar; stir. Roast15 min longer. cool. Mince onion mix. Put sour cream, chives, yogurt, & onion powder.