Melt 1 tablespoon butter in a large skillet over medium heat. Throw in mushrooms and toss around for 2 minutes, just to start the cooking process. Sprinkle mushrooms with salt.
Place mushroom caps face down in a baking dish. Heap cavity with sauteed mushrooms, then sprinkle Muenster over the top. Bake at 10 minutes on 325 degrees. Turn on broiler and broil for a couple of minutes, until the top of the Muenster starts to bubble and slightly turn brown.
Remove from oven and place on a paper towel to blot the excess liquid. Sprinkle minced parsley over the top and serve.
by The Savvy Kitchen