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Shepherd's Pie with Leftover Roast Beef Recipe

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4 from 58 reviews

This classic Shepherd's Pie recipe utilizes leftover roast beef to create a hearty, comforting casserole layered with creamy mashed potatoes and a savory vegetable and meat filling, all baked to golden perfection. It's an excellent way to repurpose pot roast and deliver a satisfying family meal.

Ingredients

Potatoes and Topping

  • 2 pounds Yukon gold potatoes
  • ½ cup salted butter (divided)
  • ¼ cup heavy cream
  • ¼ cup whole milk
  • ½ teaspoon paprika
  • salt and pepper (to taste)
  • fresh thyme (for garnish)

Filling

  • 1 cup carrots (diced)
  • ½ cup yellow onions (diced)
  • 1 cup frozen peas
  • 3-4 cups leftover pot roast and gravy (or 1 pound ground beef plus one packet of beef gravy)

Instructions

  1. Prepare the potatoes: Peel and dice the Yukon gold potatoes. Place them in a stock pot with 1 tablespoon of sea salt and cover with water. Bring to a boil and cook until the potatoes are tender when pierced with a fork. Drain well.
  2. Preheat the oven: Set your oven to 350°F (175°C) to get it ready for baking the casserole later.
  3. Mash the potatoes: Combine the drained potatoes with ¼ cup of butter, the heavy cream, and whole milk. Mash until the mixture is smooth and creamy.
  4. Cook the vegetables: In a skillet, heat 2 tablespoons of butter over medium heat. Add the diced onions and carrots, sautéing until the onions are soft and translucent.
  5. Add peas and meat: Stir the frozen peas and leftover pot roast into the cooked vegetables, mixing thoroughly to combine the flavors.
  6. Assemble the filling: Spread the meat and vegetable mixture evenly into a casserole dish. Pour any leftover gravy over the mixture. If needed, prepare extra gravy according to packet instructions and stir it into the filling to ensure moisture and richness.
  7. Add the mashed potatoes: Carefully spoon and spread the creamy mashed potatoes over the top of the meat and vegetable layer, covering it completely.
  8. Season the top: Sprinkle paprika, salt, pepper, and fresh thyme evenly over the mashed potato layer for added flavor and a decorative touch.
  9. Add melted butter: Melt the remaining butter and drizzle it over the top of the mashed potatoes to help create a golden crust as it bakes.
  10. Bake the pie: Place the casserole dish in the preheated oven and bake for 25-30 minutes. The Shepherd’s Pie is done when the gravy is bubbling along the edges and the mashed potatoes start to turn golden brown on top.

Notes

  • Using Yukon gold potatoes helps achieve a creamy and buttery mash with excellent texture.
  • Leftover gravy is crucial for moistening the filling; if using ground beef, the gravy packet ensures the mixture is flavorful and not dry.
  • Fresh thyme adds an aromatic touch but can be substituted with dried thyme or rosemary if unavailable.
  • This recipe can be adapted to a gluten-free diet by ensuring the gravy packet is gluten-free or making homemade gravy.
  • For a vegetarian version, substitute the meat with lentils or mushrooms and use vegetable gravy.
  • Allow the Shepherd's Pie to rest for 5 minutes after baking for easier serving.