Hash Browns (Or Rosti) Anna - cooking recipe

Ingredients

5 cups potatoes (the frozen shredded kind)
1 1/2 tablespoons butter (clarified)
salt and pepper
vegetable oil cooking spray

Preparation

Heat a small cast iron skillet (6\" at the bottom, flared to 7.5\" at the top and 2\" deep) with clarified butter in a 400F oven for 10 minutes.
Add a layler of potatoes, spray with oil and season lightly.
Repeat layers.
Note, this can be done by spreading the potatoes on a cookie sheet and spraying and seasoning at one time.
Bake for 25 minutes covered (foil works well).
Bake for 20 more minutes uncovered until browned on bottom of pan and done.
Invert using a small plate and season the browned bottom (now the top).
Any size pan can be used. Just fill with potatoes until rounded and then remove the potatoes to follow the receipe steps above.