Beef/Chicken Pot Pies

It is best to thaw these in advance.  Simply pull them out of the freezer in the morning before work, or even the evening before.  Once thawed simply transfer the pot pie to a baking sheet and heat at 400 for about 20 minutes.  Stir the contents of the pie to ensure it heats evenly, add the savory crumble topping and heat for 5 minutes more.
If you are cooking it from frozen: Allow 1.25 hours total cooking time. Place the pot pie on a baking sheet as above and heat at 350 for 45 minutes checking after 30 minutes to stir the contents.  When the entire dish is thawed, although not hot, turn the heat up to 400 and proceed as above.