Heat the olive oil in a frying pan, fry the bacon rashers until crisp, remove and cut into tiny pieces. Toss the chopped mushrooms quickly over a high heat in the bacon fat, add the chopped parsley and season with salt and freshly ground pepper. Add the diced rashers and allow to cool. Mix the buttered crumbs with the cheese.
Put the clams in a covered pan over a low heat, remove as soo