When you grill mushrooms, they take on a different texture entirely, they are almost meat like. If you combine that with twice cooking them, you really concentrate the flavours and textures further. You can serve these with a little grilled bacon or even a nice poached fillet of smoked haddock and poached egg.
The eagle-eyed will have spotted the picture isn't of Twice Cooked Flat Mushrooms with Basil Pancakes but of Phil attempting to break the world record for pancake stacking.
...It didn't end well!