Mushrooms in Camouflage

These speckly-green mounds on a plate of curly endive leaves look intriguing. They are in fact large mushrooms stuffed with soft poached eggs, which are then coated with a lightly-set creamy walnut and parsley sauce. Easy to do, this dish will make an impact and is substantial enough to be followed by a lighter main course. It would also make a cold lunch dish on its own, accompanied by good fresh bread.