French Onion Au Gratin Recipe
Beef Stock · Caramelized Sliced Onions Swiss Cheese · Croutons
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Ingredients
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Main Ingredients
Method
Preparation Steps
- 1
Caramelize the Onions
In a large skillet, heat the olive oil over medium heat. Add the sliced onions and a pinch of salt. Cook, stirring occasionally, for about 30-40 minutes until the onions are caramelized and golden brown.
- 2
Prepare the Soup Base
Add the beef stock, dried thyme, salt, and black pepper to the caramelized onions. Bring to a simmer and cook for an additional 10 minutes to let the flavors meld together.
- 3
- 4
Bake
Place the bowls on a baking sheet and bake in the preheated oven for 15-20 minutes, or until the cheese is melted, bubbly, and golden brown.
- 5
Serve
Remove from the oven and let cool slightly before serving. Enjoy your French Onion Au Gratin!
