Delicious! Will probably add chopped mushrooms next time. (Maybe sautee with the onions.)
Make sure to use very lean ground beef (otherwise you'll have to drain the excess fat).
Used premade/frozen mashed potatoes and that worked great! 750g was plenty. Maybe mix a little parmesan (or other cheese?) in.
Cooked filling in a cast iron skillet and just need baked it in that.
20 mins bake time + 5 min cool the was plenty.
