Illustrative serving image, not a documented photograph of a kitchen-tested batch. The image broadly depicts cheese-topped onion soup; serving size is illustrative.
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Onions simmered in broth and topped with gluten-free croutons and cheese.
Kitchen-testing note: A documented cooking test is pending. Timings in the method are estimates; finished yield and results have not been confirmed in our current testing log. Nutrition figures and unsupported historical rating totals have been removed.
Before you cook
Use bowls explicitly rated for the broiler, not merely oven-safe. Divide the croutons and cheese across portions. Briefly simmering wine does not establish that all alcohol has been removed. Check the exact broth and Worcestershire sauce.
Choosing gluten-free ingredients
Check the exact products you buy, especially flour, oats, bread, pasta, sauces and broth. Gluten-free labeling and third-party certification are different. A recipe page or scanner cannot guarantee a dish’s preparation. Use clean equipment and protect ingredients from contact with gluten-containing foods. Gluten-free does not mean free of dairy, eggs, nuts or other allergens. See the FDA guide to gluten-free labels.
2x and 3x show total ingredients for two or three separate batches. Cook each batch using the original method: amounts written in the steps, pan sizes and cooking times apply to one batch.
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1Caramelize the Onions In a large heavy-bottomed pot or Dutch oven, melt the butter or heat olive oil over medium-low heat. Add the sliced onions, sugar, salt, and pepper. Cook, stirring occasionally, for 30-45 minutes, until the onions are deeply golden brown and very tender. Don’t rush this step – it’s crucial for flavor!
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2Deglaze and Simmer Increase heat to medium. Pour in the white wine and scrape up any browned bits from the bottom of the pot with a wooden spoon. Let the wine simmer for 2-3 minutes until mostly evaporated. Add the gluten-free beef broth, Worcestershire sauce, and bay leaf. Bring to a gentle simmer, then reduce heat to low, cover, and cook for at least 30 minutes to allow flavors to meld.
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3Prepare Gluten-Free Croutons While the soup simmers, preheat your oven to 375°F (190°C). Toss the cubed gluten-free bread with 2 tablespoons of olive oil, salt, and pepper on a baking sheet. Bake for 10-15 minutes, or until golden brown and crispy. Set aside.
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4Assemble and Broil Remove the bay leaf from the soup. Taste and adjust seasonings as needed. Ladle the hot soup into broiler-safe bowls. Float a handful of gluten-free croutons on top of each bowl, then divide the listed Gruyère evenly among the bowls.
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5Serve Warm Place the bowls on a baking sheet and broil for 2-4 minutes, or until the cheese is bubbly and golden brown. Keep a close eye on them to prevent burning! Carefully remove from the oven and serve immediately. Enjoy this cozy, comforting bowl!
Food handling and leftovers
Use a food thermometer and the safe cooking temperature chart. Refrigerate perishable food within two hours, or one hour above 90°F, in shallow containers as appropriate. Keep the refrigerator at 40°F or below. Use refrigerated cooked leftovers within 3–4 days; reheat cooked leftovers to 165°F. These are general handling limits, not a tested texture or shelf-life claim for this recipe. See USDA leftover guidance.
Browse the gluten-free recipe collection and read each recipe’s current testing notes.
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