This Year's Spuds

Eighty seed potatoes chitting in the shed, so if all goes well we'll have sufficient this year. Last year I only planted out 50 and we are now down to just about 10 pounds of Pink Fir Apple and a scant few Skerry Blue.
I've just found this recipe in the Plain Cookery Book for the Working Classes for the potato-lover with an excess of same.
No.64 Potato Pie
Slice up four onions and boil them in a saucepan with two ounces of butter, a quart of water, and pepper and salt, for five minutes; then add four pounds of potatoes, peeled and cut in slices; stew the whole until the potatoes are done, and pour them into a pie-dish; cover this with stiff mashed potatoes, and bake the pie of a light brown colour.