Cook meat and onion in vegetable oil until browned.
Add flour and stir over low heat 2-3 minutes.
Add stock, sauces, salt and peppers, stir in well, bring to a boil, reduce heat and simmer 30-40 minutes until thickened. Adding more stock or water if needed.
Remove from heat and allow to cool completely.
Thaw pastry sheets
Preheat oven 200C
Line a pie dish with a sheet of Shortcrust pastry, leaving an over hang of pastry.
Spoon in the cooled pie filling.
Dampen the edges of the pastry with water, top with a sheet of Puff Pastry pressing the pastry together.
Trim the edges of the pastry and then crimp the pastry edge with a fork or your fingers.
Brush the pastry top with beaten egg or spray with water.
Bake at 200C for 30 minutes then reduce the oven temperature to 170C cook a further 20 minutes or until browned.