Separate the four croissants and lay each one out flat. Top each croissant with less than half a cup of cheese, reserving the rest of the cheese. Break cooked bacon into small pieces and sprinkle one piece of bacon per croissant over cheese. Roll up croissants loosley and sprinkle the top of each croissant with remaining cheese. Bake on middle rack at 375 degrees for 20 minutes. Inside will be steamy hot! That's it. Enjoy! :o)