Ingredients

  • 2 tablespoons butter
  • 1 tablespoon olive oil
  • 6 white boiling onions, thinly sliced
  • 2 lbs yukon gold potatoes, peeled,cut into 1/2 to 3/4 inch cubes
  • 2 cups water
  • 1/4 cup creme fraiche or 1/4 cup whipping cream
  • chopped fresh parsley

Method

  • Melt 1 tablespoon butter with oil in heavy large pot over medium heat.
  • Add onions and saute until soft, about 5 minutes.
  • Add potatoes and 2 cups water; bring to boil.
  • Cover and simmer until potatoes are tender, stirring occasionally, about 25 minutes.
  • Uncover and simmer until almost all water evaporates, about 5 minutes.
  • Remove from heat.
  • Add creme fraiche and 1 tablespoon butter.
  • Stir gently to blend, being careful not to break up potatoes.
  • Season with salt and pepper.
  • Can be made 2 hours ahead- Let stand at room temperature and rewarm over low heat before serving.
  • Sprinkle with parsley.