Ingredients:

1 cup chopped onion
6 tablespoons butter
3 cups cooked sliced potatoes
1 teaspoon salt
1/8 teaspoon pepper
chopped fresh parsley

Preparation:

In a large heavy skillet, heat butter over low heat; add onions and sauté until golden brown. Add cooked sliced potatoes to the browned onions. Cook for 3 to 4 minutes, stirring frequently. Add salt and pepper. Sprinkle with chopped parsley.
Lyonnaise potatoes serves 6.