Using 1 T butter, grease bottom and sides of 9” pie pan.
Press in prepared potatoes to form crust
Sprinkle with cheese,
Saute onion in remaining 1 T butter and spread over cheese.
Beat the rest of the ingredients together then carefully pour over crust.
Bake 375° for 45 minutes until golden brown and a knife inserted in pie comes out clean.
Cool 10 minutes for easier serving.