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Chicken Mushroom Pie with Duchess Potato


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  • Author: Maya Thornwell
  • Total Time: 1 hour 20 minutes
  • Yield: 6 servings

Description

A rich, savory chicken mushroom pie topped with creamy duchess-style mashed potatoes. This hearty meal is perfect for family dinners, holidays, or cold-weather comfort.


Ingredients

Butter Base & Seasoning:

  • 60 g (4 tbsp) unsalted butter, divided
  • 4 garlic cloves, finely minced
  • 1½ tsp cooking/kosher salt, divided
  • 1 tsp black pepper, divided

Pie Filling:

  • 750 g (1.5 lb) boneless, skinless chicken thighs
  • 500 g (1 lb) button mushrooms (whole or halved)
  • 100 g (3.5 oz) thick-cut streaky bacon, chopped
  • onions, cut into 1″ pieces
  • 2 sprigs fresh thyme (or ½ tsp dried thyme)
  • ¼ cup plain all-purpose flour
  • ¾ cup Guinness beer
  • 1½ cups low-sodium beef broth
  • ¾ cup water
  • 1 tbsp tomato paste

Mashed Potato Topping (Duchess Style):

  • 1 kg (2 lb) starchy potatoes, peeled and cubed
  • 30 g (2 tbsp) unsalted butter
  • ⅓ cup hot milk
  • ⅛ tsp white pepper

For Topping:

  • 30 g (2 tbsp) melted butter (or olive oil spray)
  • 2 tbsp grated Parmesan cheese
  • 2 tsp chopped parsley (optional)


Instructions

  1. Cook bacon until golden, remove. Sauté mushrooms, then onions and garlic. Add chicken and brown lightly.
  2. Stir in flour, then slowly add Guinness, broth, water, tomato paste, and thyme. Return bacon and mushrooms, simmer until thick.
  3. Boil and mash potatoes with butter, hot milk, white pepper, and salt. Let cool slightly.
  4. Pipe or spoon mashed potato over pie filling in a baking dish. Brush with butter and sprinkle with Parmesan.
  5. Bake at 400°F (200°C) for 25–30 minutes, broil briefly for golden top. Garnish with parsley and serve warm.

Notes

  • Pipe potatoes for a beautiful finish, or spoon and fluff with a fork for rustic charm.
  • Don’t skip pre-cooking mushrooms—they add flavor and avoid excess moisture.
  • For deeper flavor, replace Guinness with red wine or use extra stock.
  • Freeze assembled pie before baking for a make-ahead option.
  • Prep Time: 25 minutes
  • Cook Time: 55 minutes