From The Redwall Kitchen (http://redwall.net/kitchen)
Deeper 'n Ever Pie
Filling:
-4 large potatoes,peeled,cut in quarters,cooked and mashed
-2 small turnips,peeled,cut in chunks,cooked and mashed
-2 beets boiled whole in their skins until tender, then cooled, peeled, and sliced thinly.
-1 large onion-sliced and sauteed in butter
-1 cup (or more) of cheese, grated
Make a crust for a covered pie. Roll out bottom crust and fit into a 9*9 pie plate. Put half of the cheese over the bottom crust. Mix potatoes and turnips together and add 1 Tablespoon butter and 1/2 cup of milk. Put half of this into the pie crust. Mix all the beets and onions together and put on top of the potato and turnip mixture. Then put rest of potato and turnip mix on and rest of cheese. Put the top crust on with an attractive edging and slits so steam can escape. Bake at 375 degrees for 35-40 minutes until crust is browned.
This recipe from Sunstrike the Hammer.