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Inspired by classic French onion soup, these stuffed mushrooms pack the rich, savory flavors of caramelized onions, melted Gruyère and a hint of sherry vinegar into a bite-size appetizer. A quick broil gives the tops their golden, bubbly finish. Garnished with fresh thyme, they’re the perfect addition to holiday spreads, dinner parties or anytime you want a warm, crowd-pleasing starter.
Published on September 17, 2025
