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Lyonnaise potatoes in a rustic ceramic bowl on a wooden backdrop

Lyonnaise Potatoes

These classic Lyonnaise potatoes have just six simple ingredients – potatoes, butter, onions, salt, pepper, parsley – and can be ready in an hour!

Course Side Dish
Cuisine American Southern
Keyword potatoes
Prep Time 5 minutes
Cook Time 1 hour
Total Time 1 hour 5 minutes
Servings 4 servings
Calories 301 kcal
Author Katie Moseman


  • 3 large baking potatoes
  • 6 tablespoons butter divided
  • 2 onions sliced
  • 1 tablespoon kosher salt divided
  • 1 teaspoon ground black pepper divided
  • 1/4 cup flat-leafed parsley chopped


  1. Preheat oven to 400 degrees. Par-cook potatoes by piercing each several times with a fork or knife tip and bake until tender, about 45 minutes. Allow potatoes to cool slightly.
  2. Peel the potatoes, if desired, cut in half lengthwise, then cut each half into 1/4-inch slices. Set aside.
  3. In a large skillet over medium-high heat, heat 3 tablespoons of butter until melted. Add half of the potatoes and sauté until light brown, 4–5 minutes. Add half of the onions and a little salt and pepper, then continue cooking until potatoes are a golden brown and onions are just cooked through, 7–8 minutes. Remove from pan and set aside to keep warm. Repeat the process with the remaining butter, potatoes, onions, salt, and pepper.
  4. When all potatoes and onions are cooked, toss with the parsley and serve immediately.
Nutrition Facts
Lyonnaise Potatoes
Amount Per Serving
Calories 301 Calories from Fat 153
% Daily Value*
Fat 17g26%
Saturated Fat 11g69%
Trans Fat 1g
Polyunsaturated Fat 1g
Monounsaturated Fat 4g
Cholesterol 45mg15%
Sodium 1906mg83%
Potassium 779mg22%
Carbohydrates 35g12%
Fiber 3g13%
Sugar 3g3%
Protein 4g8%
Vitamin A 846IU17%
Vitamin C 18mg22%
Calcium 47mg5%
Iron 2mg11%
* Percent Daily Values are based on a 2000 calorie diet.