preheat oven to 400

boil potatoes . drain water when done

STIR potatoes, salt, pepper, butter and onion

spray glass pie plate with olive oil cooking spray

mash potato mixture into pie plate to form crust @1/4" thick

bake crust alone for @30 min or until brown or your desired amount of crispiness.

whisk eggs together and add spinach, cooked sausage and cheese (or any desired ingredients)

when crust is done cooking reduce heat to 350.

pour egg mixture into pie plate and cook @30 min