Steakhouse French Onion Au Gratin Recipe

Time1h

Serves4

Croutons and an abundance of onions smothered with swiss and parmesan cheese, broiled to a golden brown.

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Ingredients

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1
Prepare the Onions
In a large pot, melt the butter over medium heat. Add sliced onions and cook, stirring frequently, until they are caramelized and golden brown, about 25 minutes.
2
Add Broth and Seasonings
Once the onions are caramelized, add the beef broth, thyme, salt, and black pepper. Bring to a simmer and let it cook for an additional 10 minutes.
3
Assemble the Dish
Preheat the broiler. In an oven-safe dish, ladle the onion soup mixture and top with croutons, Swiss cheese, and Parmesan cheese.
4
Broil
Place the dish under the broiler for about 3-5 minutes, or until the cheese is bubbly and golden brown. Keep a close eye on it to prevent burning.
5
Serve
Remove from the oven and let it cool for a couple of minutes before serving.