I forgot the egg wash, but even without it they were great! Recipe from Tiny Tyrants Kitchen.
2 pie crusts
1.5 lbs ground beef
1/2 white onion
1-2 tsps minced garlic
salt and pepper
2-3 tablespoons water
Preheat oven to 400º. Roll pie crust out to 1/4 inch thick. Cut crusts into 4 half circles.
Boil potatoes about 8-10 minutes until slightly soft, but still firm. Drain, peel and chop potatoes. Add potatoes to a bowl with ground beef, onion, garlic, salt, and pepper. Mix carefully with hands to form 4 balls. Place each ball on half of each of the half-circles of the crust. Fold over sides to cover meat and crimp edges. Poke a few holes on top to release steam.
Beat egg and water together. Brush top of pasties with egg wash. Place on a lightly greased cookie sheet and bake for 30 minutes. Enjoy!