French Onion Au Gratin Recipe
Make French Onion Au Gratin Recipe in just 1h 30m. Get the full recipe with step-by-step instructions at pekinthechef.com.
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Ingredients
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Main Ingredients
Method
Preparation Steps
- 1
Prepare the Onions
Slice the yellow onions into thin rings. They should be uniform in thickness to ensure even cooking.
- 2
- 3
Add Liquids and Seasonings
Pour in the beef broth and dry white wine. Add the thyme, bay leaves, salt, and black pepper. Stir well to combine and bring to a simmer.
- 4
Simmer the Soup
Reduce the heat to low and let the mixture simmer for about 30 minutes to allow the flavors to develop. Stir occasionally.
- 5
Prepare the Baguette
While the soup is simmering, slice the French baguette into thick slices and toast them in the oven until golden brown.
- 6
Assemble the Au Gratin
Preheat your oven to 350°F (175°C). Ladle the soup into oven-safe bowls, place a slice of toasted baguette on top of each bowl, and generously sprinkle with Gruyere and Parmesan cheese.
- 7
Bake
Place the bowls on a baking sheet and bake in the preheated oven for about 15-20 minutes, or until the cheese is bubbly and golden brown.
- 8