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Old School Corned Beef Pie

This hearty Old School Corned Beef Pie is pure comfort food golden pastry wrapped around a rich, savory filling of corned beef, onions, and buttery mashed potatoes. Simple ingredients and classic flavor make it the perfect nostalgic dish for cozy dinners or meal prep.
Prep Time 25 minutes
Cook Time 40 minutes
Resting Time 10 minutes
Total Time 1 hour 5 minutes
Course Main Course, Pie
Cuisine British
Servings 6 slices
Calories 480 kcal

Equipment

  • Pie Dish (9-inch)
  • Rolling Pin
  • Skillet
  • Saucepan

Ingredients
  

Filling

  • 2 cups mashed potatoes made from floury potatoes like Russets or Maris Piper, with butter and a splash of milk
  • 1 tbsp butter for sautéing onions
  • 2 yellow onions diced
  • 1 can (12 oz) corned beef canned or leftover cooked corned beef, shredded
  • black pepper to taste

Pastry

  • 1 shortcrust pastry sheet homemade or store-bought
  • 1 egg beaten, for brushing crust

Instructions
 

  • Preheat oven to 375°F (190°C). Boil the potatoes in salted water until tender. Drain, mash with butter and a splash of milk, then let cool.
  • In a skillet, melt butter and sauté onions over medium heat until soft and lightly golden.
  • Break up the canned corned beef with a fork. In a large bowl, mix the beef with onions and mashed potatoes. Season with black pepper.
  • Roll out shortcrust pastry and line a 9-inch pie dish. Spoon the filling into the pastry shell and spread evenly.
  • Cover with another sheet of pastry, trim the edges, and crimp to seal. Cut small slits in the top for steam to escape.
  • Brush the top with beaten egg and bake for 35–40 minutes, until golden brown. Let rest 5–10 minutes before slicing.

Notes

Let mashed potatoes cool before mixing to prevent a soggy crust. Seal edges well to avoid leaks. For extra flavor, add a pinch of mustard powder or a splash of Worcestershire sauce to the filling. The pie freezes well — bake from frozen, adding 10–15 minutes to cook time.
Keyword Comfort Food, Corned Beef, Homemade Pie, Old School