Pre-heat oven to 375 °F. Cook spaghetti according to package directions or your can follow this
pasta cooking direction. Drain and set aside.
Heat a saucepan and put butter. When butter is heated saute garlic, onions, mushrooms and shrimps for a few minutes.
In a bowl combine and mix cream of mushroom soup, milk, shrimp juice and sherry.
Pour over the sauteed mixture. Allow to boil for 10 minutes and stir occasionally to avoid burning.
Arrange layers of spaghetti in a casserole and top each layer with the shrimp mixture.
Sprinkle with grates Parmesan cheese and chopped parsley.
Bake at least 25 minutes until cooked. If desired, you can place it under a broiler to brown the cheese.