1) Avoid using a microwave oven (the pastry doesn't respond well unless baked)

2) Allow pies to thaw (in the fridge overnight works well.)

3) Pre-heat conventional oven to 350°F.

(toaster ovens work well though you may want to cover the pie in aluminum foil if your toaster is very small)

4) Re-heat pie for 12 - 15 minutes

5) Shepherd's pies may need a little longer to thaw and/or reheat

6) Enjoy!