Make homemade French onion soup gluten free with a few simple swaps. This savory (and better-for-you!) soup features caramelized onions simmered in rich beef broth, then topped with bread and cheese. The finishing touch? A quick trip under high heat to create a gooey, golden crust—a process known as gratinéeing, which adds irresistible flavor and texture. Now, gluten-free gourmets can enjoy every comforting spoonful!

Gluten-Free French Onion Soup
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Ingredients
- 5 cups yellow onion thinly sliced
- 2 Tbsp. olive oil
- 1 tsp. salt
- 1 tsp. agave syrup
- 2 Tbsp. gluten-free flour
- 1 qt. beef broth
- 1 Tbsp. red wine vinegar
- 1/2 cup water
- 1/2 tsp. salt
- 1/4 tsp. black pepper
- 1/2 tsp. Herbs de Provence or Italian seasoning
- 6 slices gluten-free French baguette or similar toasted
- 6-18 slices thin-sliced cheese Parmesan, provolone, Swiss, Fontina, Gruyere or mozzarella
Instructions
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In 5-quart pot on low, heat olive oil and stir in onions. Cover and cook 20 minutes.
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Remove cover, turn heat to medium and add salt and agave. Cook 30 minutes, stirring often until onions are browned.
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Whisk in flour, beef stock, red wine vinegar and water. Bring to boil then cover and simmer 30-45 minutes.
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Remove from heat, add salt, pepper and Herbes de Provence or Italian seasoning to taste.
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Pour each serving into ramekins, top with toasted bread and thin slices of cheese.
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On a sheet pan, place ramekins and turn oven to broil. Broil until cheese is melted.
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Remove from oven and serve. (Note: Be cautious as ramekins are extremely hot.)
Notes
Nutrition
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