Directions
- 1Peel and thinly slice the potatoes using a mandoline slicer.
- 2Slice the onions and add them to a large pot with olive oil and salt. Cook on medium-low heat until caramelized.
- 3Add flour to the caramelized onions and mix well for 2-3 minutes.
- 4Add beef stock and bring to a light boil. Then, stir in cream, Gruyère cheese, Dijon mustard, and Worcestershire sauce.
- 5Mix for 3-4 minutes until well combined.
- 6In a casserole dish, layer the potatoes and the French onion cheese sauce, repeating until all ingredients are used.
- 7Top with more Gruyère cheese.
- 8Bake covered at 400°F for one hour.
- 9Broil for five minutes until a crispy crust forms.
- 10Let it cool before serving.
Ingredients
- 4 taters potatoes
- 3 large onions
- 1 large tbsp flour
- 2 cups beef stock
- 1 cup cream
- 1 cup Gruyère cheese
- 1 tbsp Worcestershire sauce
- 1 tsp Dijon mustard
- 1 thyme
- 1 bay leaf
- 1 olive oil
- 1 pinch salt
Equipment
knifepeelermandoline slicerlarge potwooden spooncasserole dishgrater
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