sentence: boil the potatoes until it is half done then peel the skin and grate sentence: heat butter in a pan sentence: add finely chopped onions into the melted butter and salt till it gets brown sentence: put grated potatoes in a bowl and pour salted onions into it sentence: add 1 tsp salt black pepper powder little crushed nutmeg and finely chopped parsley and mix all the ingredients well sentence: grease a baking tray with butter or oil and put the mixture on it and spread evenly sentence: spread some butter on top of the evenly spread potato mash and season with black pepper powder sentence: bake it in a preheated oven for 10  15 minutes at 200 degree and serve