Make holes in the potatoes using a fork, brush oil, sprinkle salt and pepper, bake. Alternatively, you can also boil the potatoes with salt
When they cool down, de-skin and mash them properly. Make sure there are no lumps
Add beaten egg (optional), salt, pepper, and grated cheese in the mashed potato and mix properly. Add flour and turn the mixture into a dough. Make sure it is neither too sticky nor too tight
Slice the dough into 4 parts. Roll one part into a long rope, cut into small pieces
Turn a fork and place it on a surface, sprinkle some flour on it. Slide each gnocchi squares from the base of the fork prongs to the top to give them their shape
Boil water with salt in a deep bottomed pot. Add gnocchi in batches and boil till they float to the top
Heat up a dry skillet, add mushroom and a pinch of salt. Once the moisture evaporates add a little butter, garlic, and fry until they turn golden brown
Add heavy cream and let it boil. Once it reduces, add milk and let it simmer. Then add 1 tablespoon of cornstarch by mixing it in a cup of water. Stir until it thickens