Slice half of the potatoes very thin & layer them on bottom of Dutch oven. Slice onions 1/2" thick & layer half on top of potatoes.

Arrange cubes & bacon over onions & season with thyme, parsley, salt & pepper. Cover with remaining whole potatoes & pour in stock.

Sprinkle top with salt & pepper & bay leaf. Cover with tight fitting lid or foil & place in 350 oven for 2 1/2 hours. Make a day before & refrigerate, remove fat & heat in 350 oven. Remove bay leaf.