Thaw pasties overnight in refrigerator.  Remove foil and place in microwave for 30 seconds to slightly warm up pastie. Next place pasties on a baking pan in a preheated oven at 325 F for roughly 15 minutes.  To check if they a done insert a fork into top of pasties for 15 seconds, pull it out and touch part of fork that was in pastie and see if it is warm enough.