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Shepherd's Pie with Mushroom and Onion Gravy Sponsored by Sterling Farms

Leftover lamb is perfect for chopping and transforming into this warm, comforting Shepherd’s Pie, a second meal that’s just as satisfying as the first.
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Prep Time 5 minutes
Cook Time 55 minutes
Total Time 1 hour
Course Main Course
Cuisine British
Servings 8

Equipment

  • 1 knife
  • Measuring spoons
  • 1 measuring cup
  • 1 large skillet
  • 1 Large spoon
  • 1 large casserole dish
  • 1 baking sheet

Ingredients
  

  • 4 Tbsp. butter + 2 Tbsp. for the top
  • 1 container mushrooms sliced
  • 2 ribs celery sliced
  • 1 clove garlic minced
  • Leftover roasted onions chopped
  • 2 cups broth leftover from the lamb roast
  • 2 tsp. Worcestershire sauce
  • 2 Tbsp. tomato paste
  • 1 tsp. bouillon I used beef Better Than Bouillon
  • 1 cup red wine
  • 1 packet dry onion soup mix
  • Leftover lamb roast chopped (about 1-1/2 lb.)
  • 1-2 cups frozen mixed vegetables
  • 1 cup frozen peas optional
  • 2 Tbsp. cornstarch
  • 1 cup water
  • Salt and pepper
  • 2 family sized containers prepared mashed potatoes I like Bob Evans, but you can use your favorite or make homemade

Instructions
 

  • In a large skillet, heat the butter.
  • Sauté the mushrooms, garlic and celery until softened, about 3 minutes.
  • Add the leftover roasted onions.
  • Add salt and pepper.
  • Stir.
  • Add the leftover broth, Worcestershire sauce, bouillon, red wine, tomato paste and onion soup mix.
  • Stir well.
  • Bring to a boil.
  • Lower the heat for a light boil.
  • Add more salt and pepper to taste to layer the seasoning at each step.
  • Cook down for about 5 minutes.
  • Taste to adjust the seasonings. If you think you have added enough salt and pepper, you do not have to add any more.
  • Add the lamb, mixed vegetables and frozen peas.
  • Add a little more salt and pepper if needed.
  • Cook another 5 minutes to take the chill off the lamb and vegetables.
  • Make a cornstarch slurry by whisking 2 tablespoons of cornstarch with water.
  • Pour into the filling mixture and stir until your desired thickness is attained. If you like a thicker texture, you can add some more cornstarch slurry.
  • Transfer the filling into a greased casserole dish.
  • Stir in plenty of salt and pepper into the mashed potatoes and taste to adjust the seasoning.
  • Spoon the mashed potatoes over the filling.
  • Smooth it out with a spatula.
  • Dot with cubes of butter.
  • Place casserole dish on a baking sheet.
  • Bake at 375 for 30-35 minutes.
  • Allow to cool 10 minutes before serving.
Keyword Lamb Recipe, Leftover recipe, Resistant Starch, Shepherd's Pie with Mushroom and Onion Gravy, Shepherds Pie, Starch-Resistant, Sterling Farms