Spoon a sixth of the mince and potato mixture into the pie case. Brush the overhanging edges with a little milk. Roll out the smaller portion of pastry until it is large enough to cover the pie dish.
Add the mince, break up well, and cook until it changes colour from red to fawny colour. Add the 2 Oxo cubes and brown sauce and really mix well. Add the potatoes and simmer gently for 30 minutes ...