Lyonnaise Potatoes are a classic French dish that will transport your taste buds straight to the charming streets of Lyon. This dish features crispy, golden potatoes perfectly caramelized with onions and finished with a sprinkle of fresh parsley. It’s a delightful accompaniment to any meal or can stand alone as a comforting side. With just a few simple ingredients, you can create a dish that is both elegant and satisfying. Let’s dive into the world of Lyonnaise Potatoes!
Why It Works Every Time

The key to perfect Lyonnaise Potatoes lies in the technique. Using russet potatoes provides a fluffy interior while achieving that sought-after crispy exterior. The combination of butter and olive oil allows for high-temperature cooking without burning, giving the potatoes a deliciously golden crust. Sautéing the onions until caramelized adds a depth of flavor that elevates the dish, making every bite a delightful experience. The fresh parsley at the end not only adds a pop of color but also enhances the overall freshness of the dish.
What You’ll Gather
To make Lyonnaise Potatoes, you’ll need to gather the following ingredients:
- 3 pounds russet potatoes
- 1 large onion (thinly sliced)
- 4 tablespoons unsalted butter (divided)
- 2 tablespoons extra virgin olive oil
- 2 tablespoons fresh parsley (chopped)
- Salt and pepper (to taste)
Tools & Equipment Needed
Before you start cooking, make sure you have the following tools handy:
- Chef’s knife – For slicing the onions and potatoes.
- Cutting board – To provide a stable surface for slicing.
- Large skillet – A heavy-bottom skillet works best for even cooking.
- Spatula – For flipping the potatoes without breaking them.
- Serving dish – To showcase your beautiful Lyonnaise Potatoes.
From Start to Finish: Lyonnaise Potatoes

Now, let’s get cooking! Follow these step-by-step instructions for perfectly crispy Lyonnaise Potatoes.
Step 1: Prepare the Potatoes
Begin by peeling the russet potatoes. Once peeled, slice them into uniform rounds, about 1/4 inch thick. This ensures even cooking and crisping. Place the sliced potatoes in a bowl of cold water to prevent browning while you prepare the other ingredients.
Step 2: Caramelize the Onions
In your large skillet, heat 2 tablespoons of unsalted butter and 2 tablespoons of extra virgin olive oil over medium heat. Add the thinly sliced onion and a pinch of salt. Sauté the onions for about 10-15 minutes, stirring occasionally, until they are golden brown and caramelized. This step is crucial as it adds a rich flavor to the dish.
Step 3: Cook the Potatoes
While the onions are caramelizing, drain the potatoes and pat them dry with a clean kitchen towel. Once the onions are done, remove them from the skillet and set aside. In the same skillet, add the remaining 2 tablespoons of unsalted butter. Once melted, add the potato slices in a single layer, ensuring they are not overcrowded. Season with salt and pepper.
Step 4: Achieve the Perfect Crisp
Increase the heat to medium-high and cook the potatoes for about 5-7 minutes without stirring. This allows them to form a golden crust. After 7 minutes, carefully flip the potatoes and cook for an additional 5-7 minutes on the other side. You may need to adjust the heat to prevent burning while ensuring the potatoes are cooked through.
Step 5: Combine and Garnish
Once the potatoes are golden and crispy, return the caramelized onions to the skillet. Gently toss everything together to combine. Remove from heat, sprinkle with fresh chopped parsley, and adjust seasoning with salt and pepper to taste.
Seasonal Ingredient Swaps

Feel free to customize your Lyonnaise Potatoes with these seasonal ingredient swaps:
- Sweet Potatoes: For a sweeter twist, substitute half of the russet potatoes with sweet potatoes.
- Shallots: Use shallots instead of onions for a milder flavor.
- Herbs: Experiment with fresh thyme or rosemary for added aroma.
- Cheese: A sprinkle of grated Gruyere cheese can add a rich, nutty flavor.
Things That Go Wrong
Even the best chefs encounter hiccups. Here are some common pitfalls when making Lyonnaise Potatoes:
- Burnt Potatoes: Ensure your heat is not too high when cooking the potatoes. If they are browning too quickly, reduce the heat.
- Soggy Texture: Make sure to dry the potatoes thoroughly after rinsing to avoid excess moisture.
- Uneven Cooking: Cut potatoes into uniform slices to ensure even cooking.
Freezer-Friendly Notes
Lyonnaise Potatoes are best enjoyed fresh, but you can freeze them if needed. Here are some tips:
- Allow the potatoes to cool completely before freezing.
- Store them in an airtight container or freezer bag for up to 2 months.
- To reheat, place them in a preheated oven at 375°F until heated through and crispy.
Troubleshooting Q&A
Why are my Lyonnaise Potatoes not crispy?
If your potatoes are not crispy, it could be due to excess moisture. Make sure to dry them well after rinsing and avoid overcrowding the skillet when cooking.
Can I use other types of potatoes?
While russet potatoes are ideal for their fluffy texture, Yukon Gold or red potatoes can also work. Just keep in mind they may yield different textures.
How do I store leftover Lyonnaise Potatoes?
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in a skillet to restore some of the crispiness.
Can I make Lyonnaise Potatoes ahead of time?
While it’s best to serve them fresh, you can prep the potatoes and onions ahead of time and cook them just before serving for the best results.
Serve with These
Lyonnaise Potatoes pair beautifully with a variety of dishes. Consider serving them alongside:
- Layered Potatoes And Meatballs
- Potato Leek Soup
- Grilled chicken or steak
- Oven-roasted vegetables
Bring It to the Table
Now that you’ve mastered the art of making Lyonnaise Potatoes, it’s time to impress your family and friends. Serve this dish hot, straight from the skillet, and watch as they dig in with delight. The crispy edges, savory onions, and fresh parsley will have everyone asking for seconds.
Lyonnaise Potatoes are not just a side dish; they are an experience. With each bite, you’ll taste the love and care that went into making this classic French recipe. Enjoy the process, savor the flavors, and don’t forget to share this delightful dish with those you love. Happy cooking!

Lyonnaise Potatoes
Ingredients
- 3 pounds russet potatoes peeled and sliced into rounds
- 1 large onion thinly sliced
- 4 tablespoons unsalted butter divided
- 2 tablespoons extra virgin olive oil
- 2 tablespoons fresh parsley chopped
- to taste Salt and pepper
Instructions
- Begin by peeling the russet potatoes. Once peeled, slice them into uniform rounds, about 1/4 inch thick. Place the sliced potatoes in a bowl of cold water to prevent browning.
- In your large skillet, heat 2 tablespoons of unsalted butter and 2 tablespoons of extra virgin olive oil over medium heat. Add the thinly sliced onion and a pinch of salt. Sauté for about 10-15 minutes until golden brown.
- Drain the potatoes and pat them dry. In the same skillet, add the remaining 2 tablespoons of unsalted butter. Once melted, add the potato slices in a single layer, seasoning with salt and pepper.
- Increase the heat to medium-high and cook the potatoes for about 5-7 minutes without stirring. Carefully flip the potatoes and cook for an additional 5-7 minutes until golden and crispy.
- Once crispy, return the caramelized onions to the skillet. Gently toss to combine, remove from heat, sprinkle with parsley, and adjust seasoning as needed.
Equipment
- Chef's knife
- Cutting Board
- Large Skillet
- Spatula
- Serving dish
Notes
- For a sweeter twist, substitute half of the russet potatoes with sweet potatoes.
- Use shallots instead of onions for a milder flavor.
- Ensure to dry the potatoes thoroughly after rinsing to avoid a soggy texture.
