Potato Mushroom Pie with Caramelized Onions


  • Ingredients for Potato Mushroom Pie
  • 3 cups prepared mashed Idaho potatoes
  • 1 cup button mushrooms (stems intact), sliced 1/3 inch thick
  • 1/2 cup portobello mushrooms, cut 1/3 inch thick
  • 1/3 cup white onion, grated
  • 1 teaspoon fresh lemon juice
  • 3 tablespoons butter
  • 1/2 to 3/4 cup sour cream
  • 1/4 cup + 1/4 cup grated Parmesan cheese
  • To taste salt and pepper
  • Ingredients for Caramelized Onions
  • 1 large sweet yellow onion
  • 1 tablespoon olive oil
  • 1 teaspoon light brown sugar
  • Splash dry white wine
  • To taste salt and pepper


  1. Preheat oven to 350 degrees.
  2. Saute mushrooms and onion in butter. Stir in lemon juice and salt and pepper. Place 1/2 the prepared potatoes in a buttered casserole dish, top with 1/4 cup of parmesan cheese, the entire mushroom mixture, the sour cream, and 1/4 cup grated parmesan cheese, in that order. Cover with remaining potatoes. Bake 35 to 45 minutes. While the pie is baking, prepare caramelized onions.
Caramelized Onions:
  1. Peel and slice onion. Place onions with olive oil into a heavy duty saucepan, cover and cook on medium heat for about 5 minutes, (or until softened). Toss often while cooking. Sprinkle onions with sugar and wine and saute until onions are caramelized, as desired. Season with salt and pepper. Serve with Potato & Mushroom Pie.
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Yield: Serves 6

Robin Clough
Robin Clough Catering
Gray, MN

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