Minced Beef And Onion Pie is the kind of dinner that fixes a rough day without much fuss. Tender ground beef and sweet caramelized onions simmer in a rich, glossy gravy, then get tucked under a sheet of golden, flaky pastry. This version keeps things simple and approachable, using everyday ingredients and a straightforward method, so even a first time baker can pull it off with confidence.
Heat olive oil in a large skillet over medium heat. Add onions and a pinch of salt, cook until soft and golden (8-10 minutes). Stir in garlic during the last minute.
Push onions to one side and add minced beef to the pan. Break apart with a wooden spoon and cook until no pink remains (6-8 minutes). Stir onions back through and drain excess fat if needed.
Sprinkle flour over the beef and stir constantly for 1 minute. Slowly pour in beef stock while stirring, then add Worcestershire sauce, tomato paste, and Dijon mustard. Stir until fully combined.
Add fresh thyme, salt, and pepper. Reduce heat to low and simmer uncovered for 12-15 minutes, stirring occasionally, until gravy thickens. Stir in cheddar cheese at the end if using.
Remove pan from heat and let filling cool for 15 minutes. Meanwhile, preheat oven to 400°F (200°C) and grease your pie dish.
Spoon cooled filling into the pie dish. Roll out puff pastry on a floured surface until slightly larger than the dish. Lay pastry over filling, trim excess, and press edges to seal.
Brush beaten egg over pastry and cut 2-3 small slits in the center to let steam escape. Place pie on a baking sheet to catch any drips.
Bake for 25-30 minutes until pastry is deep golden brown and filling bubbles around the edges. Rest for 5-10 minutes before slicing and serving.
Notes
Let the filling cool before adding pastry to avoid a soggy bottom crust.
Do not skip the egg wash for that deep golden color and glossy finish.
Use cold pastry straight from the fridge for the flakiest results.
Taste the gravy before assembling and adjust the seasoning as needed.
Swap in ground lamb for a richer, gamier flavor variation.
Add diced carrots and peas for extra vegetables in the filling.
Use a shortcrust base and puff pastry top for a classic pub-style pie.
Refrigerate leftovers in an airtight container for up to 4 days.
Freeze baked or unbaked pie, tightly wrapped, for up to 3 months.
Reheat individual slices in the oven at 350°F (175°C) for 15 minutes for best texture.