Place the stick of butter in a large deep skillet

Turn the heat to medium high, once the butter melts, add the onions and garlic and begin to saute', continue stirring occasionally until onions are transparent in appearance and garlic has softened.

Add the hamburger meat and cook until browned and no longer pink. after you have browned the meat, drain off the grease and return to the skillet. add 1c heavy cream and 1 c portabella mushrooms. stir until heated through and the mixture begins to simmer.

Once the mixture begins to simmer, add the rest of the ingredients and continue heating until cheese and sour cream has melted. if the mixture is too thick add a little more cream until the sauce has a gravy like consistancy. cover reduce heat to low and let simmer.

While you are letting the mixture simmer, start preparing your noodles, cook the noodles al dente (firm to the bite). Once your noodles are done cooking, drain the water off and add the noodles to the simmering mixture. heat the mixture with the noodles for 10-15 minutes.

Serve.