Roll out about two thirds of the pastry on a floured surface to about 3 mm thickness

Line a 1.5 L pie dish with the rolled out pastry and place a pie funnel in the middle

Put the flour, salt and pepper in a bowl and toss the cubes of steak into the mixture

Remove all the fat and skin from the kidneys and slice thickly.

Add to the steak cubes and toss well. Melt the butter in a pan and fry the onion until soft, then add the mustard, they leaves, parsley and the stock and stir well

Preheat the oven to 190°C and place the steak and kidney into the pie then add the stock mixture.

Roll out the remaining pastry to a thickness of 3 mm then brush the edges of the pastry forming the lower half of the pie with the beaten egg then cover with a 2nd piece of pastry.

Press the pieces of pastry together to seal the edge then trim use the trimmings to decorate the top of the leaf pattern

Brush the pie with beaten egg and make a small hole over the top of the funnel bake for about 1 hour until the pastry is golden brown