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white platter piled high with buttery potatoes and onions garnished with fresh parsley

Lyonnaise Potatoes (Fried Potatoes and Onions) 

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6 Yukon gold potatoes

2 tablespoons coarse sea salt

1 large yellow onion, peeled and sliced thin

2 thyme sprigs, stripped and diced

4 tablespoons butter

2 tablespoons olive oil

3 tablespoons flat leaf parsley, diced

Sea salt and black pepper


  1. Slice potatoes about 1/4 inch thick. Add them to a pot and cover with water. Add 2 tablespoons of salt and bring to a boil for about 4 minutes, until the potatoes are tender but not soft. Drain gently and set aside. 
  2. After starting the potatoes, heat a large nonstick or cast iron skillet over medium heat. Add 2 tablespoons butter, all of the sliced onions and thyme, and a good pinch of salt. Sauté until the onions are browned and tender, about 10 minutes. (We are not looking for caramelized onions - that would take close to an hour. Just tender and maybe a little crispy around the edges.) Transfer onions to a dish and set aside. 
  3. Add another tablespoon of butter and olive oil to the same large skillet, along with half of the potato slices (just enough to keep them in a single layer). Sprinkle with salt and pepper. Cook for 3-4 minutes (without turning them) and check to see if they are nicely browned. If so, flip and cook another 3 minutes. When finished, transfer the golden brown slices of potatoes to a dish and set aside.
  4. Return the skillet to heat and add the final tablespoon of butter and olive oil, along with the last batch of potato slices. Sprinkle with salt and pepper. Brown for 3-4 minutes on each side. Add the first batch of potatoes and the buttery thyme onions back into the skillet. Toss gently to heat through and add half the parsley. Taste and adjust seasoning.
  5. Plate the crispy potatoes and garnish with the remaining parsley.


When cooking the onions, you are not looking for caramelization. Just tender and maybe a little crispy around the edges.

  • Prep Time: 5
  • Cook Time: 20
  • Category: Easy Recipes
  • Method: Stove Top
  • Cuisine: French