Easy to assemble and perfectly portable, these French Onion Soup bites are the perfect addition to any holiday party spread. They’re like your favorite Trader Joe’s freezer aisle find, but tastier.
Heat oil in a large skillet over medium. Add onions, salt, sugar, and pepper; cook, stirring often, for 5 minutes. Reduce heat to medium-low; cook, stirring often, until onions are golden brown and very tender, about 25 minutes. Stir in sherry, parsley, and thyme; cook, stirring often, until fragrant, about 1 minute. Remove from heat. Stir in 1 3/4 cups of the cheese; set aside.
Preheat oven to 350°F. Place phyllo shells on a baking sheet, and fill each with about 1 tablespoon of the onion mixture; top each cup with some of the remaining cheese. Bake in preheated oven until cheese is melted, about 10 minutes. Place on a serving platter, and sprinkle with chives. Serve hot.