I grew up with these. When my Finnish ancestors came to America, they would take these into the mine for work each day.
1 lb hamburger- raw
3 potatoes
2 big carrots sliced
1 onion- chopped
frozen peas
4 pie crusts or homemade pie dough
Cut vegetables into small pieces. Take a 6 inch in diameter pie crust. On half of the dough, place 1/4 of the hamburger, and veggies. Fold over and seal along the edge with a fork. Bake at 350 for 1 hour. These will freeze well. I would make A LOT at once.