In this decadent pie recipe, golden laminated pastry is filled with a Nanna Tate potato and mushroom duxelle-style mix, baked until golden brown and glossy, and served with a rich Madeira sauce.
Cook the diced potatoes in a pan of salted boiling water for 8–10 minutes until tender, then drain and set aside.
Heat the olive oil and butter in a frying pan, add the shallots and garlic and cook until softened. Stir in the chopped mushrooms and thyme, cooking over medium-high heat until the mushrooms release their liquid and turn golden
Add the cooked potatoes, cream and Parmesan. Stir gently to combine, season well, then fold through the parsley. Allow the filling to cool completely before assembling the pie
Preheat the oven to 200°C fan
Roll out the puff pastry on a lightly floured surface and cut two circles – one 22 cm, one 24 cm
Place the smaller circle on a lined baking tray and pile the cooled filling into the centre, leaving a 2 cm border around the edge. Brush the edge with egg wash
Lay the larger pastry circle over the top, pressing firmly to seal. Use the back of a knife to scallop the edges, then score a spiral pattern across the top. Brush generously with egg wash and sprinkle with sea salt flakes
Bake for 30–35 minutes until puffed, golden and glossy
Meanwhile, gently cook the shallot, garlic and thyme in the olive oil until softened, then pour in the Madeira and simmer until reduced by half
Add the stock, bring to the boil and reduce again until thickened
Stir in the cream and whisk in the butter to finish. Pass through a fine sieve before serving
Place the golden pithivier on a board or platter, garnish with thyme sprigs and parsley leaves, and serve in slices with the rich Madeira sauce on the side

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