one of my favorites
take a large chuck of deer loin, make a butterfly cut, lengthways, open halves of the loin, and pound to 1/2-3/4 inch thick, with meat tenderizer hammer.
in a skillet, saute morel mushrooms and onions in butter. (i have yet to try it with "store bought mushrooms" but i am going to give it a shot soon)
place meat on a cutting board. top with abut half of the onion/mushrooms, place 1-2 slices of swiss cheese on top of that. roll the meat tightly around the mixture, secure with cooking string (the kind they use to tie roasts (from meat dept).
place in a shallow baking dish, top with remaining mushroom/onions and a few more slices of swiss cheese. cover and bake at 350 until meat is done. cut strings, slice, and serve
YUUUUMMMM