Creamy Mushroom and Gruy?re Gratin  Creamy Mushroom and Gruy?re Gratin

Creamy Mushroom and Gruyére Gratin image Image by: Creamy Mushroom and Gruyére Gratin image Author: Canadian Living

Gruy?re, a rich and nutty Swiss cheese, makes this mushroom bake as sinfully decadent as it is elegant. Chestnuts add a festive note and can be found in the produce section of most grocery stores.

  • Portion size 12 servings
  • Credits : Canadian Living Magazine: October 2014


  • 5 tablespoons butter
  • 1 bunch leeks (white and light green parts only),halved lengthwise and sliced crosswise
  • 4 cloves garlic minced
  • 1/2 teaspoon each salt and pepper
  • 3 pkg button mushrooms sliced
  • 227 g oyster mushrooms trimmed and torn
  • 1/3 cup all-purpose flour
  • 1 1/4 cup sodium-reduced chicken broth
  • 1/2 cup whipping cream 35%
  • 2 tablespoons grainy Dijon mustard
  • 1 bag chestnut chopped (optional)
  • 1/2 cup chopped fresh parsley
  • 1 tablespoon chopped fresh thyme
  • 4 teaspoons lemon juice
Gruyère Crumb Topping:
  • 2 cups fresh bread crumbs
  • 3/4 cups grated Gruyère cheese
  • 2 tablespoons butter melted
  • 2 tablespoons chopped fresh parsley


In large skillet, melt 2 tbsp of the butter over medium heat; cook leeks, garlic and half each of the salt and pepper, stirring, until leeks are softened, about 6 minutes.Remove to bowl; set aside.

In same skillet, melt remaining butter over medium heat; cook cremini mushrooms, oyster mushrooms and remaining salt and pepper, stirring occasionally, until mushrooms are just tender and have released their juices, 5 to 8 minutes. Sprinkle with flour; cook, stirring, until light golden, about 2 minutes. Stir in leek mixture.

Whisk in broth, cream and mustard until smooth. Cook, whisking, until thickened, 3 to 5 minutes. Stir in chestnuts (if using), parsley, thyme and lemon juice. Spoon into 8-cup (2 L) casserole dish. (Make-ahead: Let cool to room temperature; cover and refrigerate for up to 24 hours. To reheat, cover with foil and bake in 375 F/190 C oven until hot and bubbly, about 45 minutes; uncover and continue with recipe.)

Gruy?re Crumb Topping: In bowl, stir together bread crumbs, Gruy?re cheese, butter and parsley; sprinkle over mushroom mixture. Broil until topping is golden, 2 to 4 minutes.

Nutritional facts per serving: about

  • Fibre 3 g
  • Sodium 323 mg
  • Sugars 3 g
  • Protein 8 g
  • Calories 191.0
  • Total fat 13 g
  • Potassium 429 mg
  • Cholesterol 38 mg
  • Saturated fat 8 g
  • Total carbohydrate 14 g


  • Iron 12.0
  • Folate 17.0
  • Calcium 11.0
  • Vitamin A 19.0
  • Vitamin C 12.0
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Creamy Mushroom and Gruy?re Gratin