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Corned Beef Hash Shepherds Pie

Corned beef hash shepherds pie with golden cheesy mashed potato topping in skillet

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This satisfying dinner transforms leftover or canned corned beef into a deeply comforting casserole. A savory hash filling is topped with creamy, cheesy mashed potatoes and baked until golden. It’s a budget-friendly, family-friendly meal that feels like a kitchen hug.

Ingredients

Scale
  • For the Filling:
  • 2 tablespoons olive oil or butter
  • 1 large yellow onion, diced
  • 2 cloves garlic, minced
  • 3 cups cooked corned beef, chopped (about 1 lb)
  • 3 cups frozen diced potatoes
  • 1 cup frozen mixed vegetables (peas, carrots, corn)
  • 2 tablespoons tomato paste
  • 1 tablespoon Worcestershire sauce
  • 1 cup beef broth
  • 1 teaspoon dried thyme
  • Salt and black pepper to taste
  • For the Topping:
  • 2.5 pounds russet potatoes, peeled and cubed
  • 0.5 cup whole milk, warmed
  • 4 tablespoons unsalted butter
  • 0.5 cup sour cream
  • 1 cup shredded sharp cheddar cheese, divided
  • Salt and white pepper to taste

Instructions

  1. Prepare the mashed potato topping. Boil the cubed russet potatoes in salted water until fork-tender, about 15-20 minutes. Drain well and return to the hot pot to steam dry. Mash with warm milk, butter, and sour cream until smooth. Stir in half the cheddar cheese. Season with salt and white pepper. Set aside.
  2. Preheat oven to 400°F (200°C).
  3. Build the filling. Heat oil in a large, oven-safe skillet over medium heat. Cook onion until soft, about 5 minutes. Add garlic and cook for 1 minute until fragrant.
  4. Add chopped corned beef and frozen potatoes to the skillet. Cook for 8-10 minutes, stirring occasionally, until potatoes begin to soften.
  5. Stir in frozen vegetables, tomato paste, Worcestershire sauce, dried thyme, and beef broth. Simmer for 5-7 minutes until liquid reduces slightly. Season with black pepper and taste before adding salt.
  6. Assemble the pie. If your skillet is not oven-safe, transfer the filling to a 9×13 inch baking dish. Spread the filling evenly. Spoon the mashed potatoes over the top, spreading to the edges. Create swirls with a fork and sprinkle with the remaining cheese.
  7. Bake for 20-25 minutes until the topping is golden and the filling is bubbling at the edges. Let rest for 5-10 minutes before serving.

Notes

Let the pie rest before slicing to allow the filling to set. For a crispier top, broil for the final 2-3 minutes, watching closely. Use a 12-oz can of corned beef if you don’t have leftovers. The pie can be assembled ahead and refrigerated overnight; add 10-15 minutes to baking time.

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