If you are looking for the ultimate potato side dish that feels both incredibly sophisticated and deeply comforting, Lyonnaise Potatoes are the answer. This classic French dish, named after the city of Lyon, takes humble russet potatoes and transforms them into a masterpiece of textures: crispy on the outside, buttery-soft on the inside, and tangled with sweet, golden caramelized onions.
While many potato recipes can feel like an afterthought, Lyonnaise Potatoes are a showstopper. The secret lies in the two-step cooking process—parboiling to ensure a creamy interior, followed by a pan-fry in butter and olive oil for that irresistible golden crust. Finished with a shower of fresh parsley, it’s a dish that elevates everything from a simple roast chicken to a festive holiday steak.
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Why You’ll Love This Recipe
- Textural Contrast: You get the crunch of a fry with the fluffiness of a baked potato.
- Flavor Depth: The slow-caramelized onions provide a natural sweetness that balances the earthy russets.
- Make-Ahead Friendly: You can parboil the potatoes and caramelize the onions in advance, making the final sear a breeze for dinner parties.
Recipe Ingredients
- Russet Potatoes – Peeled and sliced into rounds.
- Large Onion – Thinly sliced for caramelizing.
- Unsalted Butter – High-quality butter for authentic flavor.
- Extra Virgin Olive Oil – To achieve the perfect golden crisp.
- Fresh Parsley – Chopped for a fresh herbal finish.
- Salt and Pepper – To taste.
See recipe card below for a full list of ingredients and measurements.
Substitutions & Variations
- Potato Types: Yukon Golds are a fantastic alternative if you prefer a creamier, waxier bite.
- Add Bacon: Sauté some diced pancetta or bacon before caramelizing the onions for a smoky twist.
- Herby Mix: Swap parsley for fresh thyme or rosemary for a more woody aroma.
This recipe hasn’t been tested with all substitutions. If you try one, share how it turned out!
Step by Step Instructions
Step 1: Peel the potatoes and slice them into rounds. Place the slices in a pot of salted water and bring to a boil. Cook until they are just tender but still hold their shape. Drain well and set aside.
Step 2: In a large skillet, melt half of the butter over medium heat. Add the sliced onion and cook, stirring occasionally, until they are soft and deep golden amber. Remove the onions from the skillet and set aside.
Step 3: In the same skillet, heat the remaining butter and olive oil over medium-high heat. Add the cooked potato slices in a single layer. Cook until they are golden brown on both sides, working in batches if necessary to avoid crowding the pan.
Step 4: Return all the potatoes and caramelized onions to the pan. Mix gently to combine, being careful not to break the potato rounds. Season with salt and pepper, and sprinkle with fresh chopped parsley.
Expert Tips
- Dry the Potatoes: After draining, let the potato slices steam-dry for a minute. Excess moisture prevents that perfect golden crust.
- The Single Layer: Patience is key in Step 3. If you stack the potatoes, they will steam instead of fry. Give them space to get crispy.
- Heat Control: If the potatoes brown too quickly, reduce the heat to ensure they cook through without burning the butter.
FAQs
Can I use frozen potatoes?
Fresh is best for this recipe to ensure the slices hold their shape during the two-step cooking process.
Do I have to peel them?
It’s traditional, but keeping the skins on Yukon Golds can add a nice rustic texture.
Storage
- To Store: Keep leftovers in an airtight container in the fridge for up to 3-4 days.
- To Reheat: For the best texture, reheat in a skillet over medium heat with a tiny bit of butter until warmed through and re-crisped.
📖 Recipe
Lyonnaise Potatoes
Equipment
- Large pot
- 12-inch skillet
- Slotted Spoon or Spatula
- Colander
- Chef's knife
Ingredients
- 3 lbs Russet potatoes
- 1 Large onion thinly sliced
- 4 tablespoon Unsalted butter divided
- 2 tablespoon Extra virgin olive oil
- 2 tablespoon Fresh parsley chopped
- Salt and pepper to taste
Instructions
- Peel potatoes and slice into ¼-inch rounds. Parboil in salted water for 5 minutes until just tender. Drain and set aside.
- Melt 2 tablespoon butter in a skillet over medium heat. Sauté onions for 15-20 minutes until caramelized. Remove and set aside.
- In the same skillet, heat remaining 2 tablespoon butter and olive oil over medium-high heat. Fry potato slices in a single layer (in batches) for 5 minutes per side until golden brown.
- Return onions and all potatoes to the pan. Toss gently to combine. Season with salt, pepper, and fresh parsley. Serve hot.
Notes
- Lump Rule: When tossing at the end, be gentle! You want the onions incorporated without breaking the crispy potato rounds.
- Heat Control: If the potatoes brown too quickly, turn the heat down slightly to ensure they cook through without burning the butter.
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