Mushrooms Au Gratin

Group of Mushrooms on Slate
RBOZUK/Getty Images
  • 30 mins
  • Prep: 10 mins,
  • Cook: 20 mins
  • Yield: 4 Servings
Ratings (7)

A rich and delicious side dish casserole for mushroom lovers, this mushroom au gratin recipe is made with fresh mushrooms, sour cream, and cheese.

What You'll Need

  • 16 ounces sliced mushrooms
  • 2 tablespoons butter
  • 1 egg yolk
  • 1/3 cup sour cream
  • 1/4 teaspoon salt
  • 1/8 teaspoon pepper
  • 3 tablespoons fresh chopped parsley
  • 1/3 cup shredded Swiss or Monterey Jack cheese

How to Make It

  1. Heat butter in a skillet over medium-low heat. When butter is foamy, add mushrooms and cook until lightly browned, stirring constantly.
  2. Whisk together the sour cream, egg yolk, and salt and pepper; stir into the mushrooms. Heat through, stirring.
  3. Spoon mushroom mixture into a shallow baking dish; sprinkle with the chopped parsley and shredded cheese.
  4. Bake at 425F for 10 minutes, until cheese is melted.

    Serves 4.