Heat the oil in the pan. Fry the mushrooms in it until they are golden brown and season them with salt and pepper. Mix the bacon mixture with this. Strain the noodles and collect 3/4 cups of the water they were boiled in. Pour this water onto the mushroom mixture and bring it to the boil. Season everything with salt and pepper and lemon juice,. Stir in the butter to thicken the mixture, but do not boil it any longer. Mix in the noodles. Serve the mushroom cranberry pasta with parsley and Parmesan sprinkled over the top.