there are a lot of variations, but it's pretty simple, just time consuming unless you buy some stuff already made. If you google search "pennsylvania dutch style pot pie", you'll get quite a few variations. Some of the basics that I went by:
dough: flour, salt, shortening, egg, water...roll out really thin and cut into about 1" squares
potatoes (cut up to whatever size...usually use white potatoes in about 1/2" pieces)
stock/meat: boil meat w/ bones until done...you can strain the stock if you want and/or reduce it a little and/or add bouillon and whatever else you want to add flavor
take meat out and pull off of the bones...if you want, you can take the leftovers and make more stock for something else
boil potatoes until soft in stock and then add dough, parsley, salt and pepper until cooked and put meat back in