Preheat oven to 275°F. Season meat with salt and pepper.
Heat a large Dutch oven over medium-high to high heat. Add the oil, 2 turns of the pan, and brown the meat in 2 batches. Add stock and stir to deglaze. Add potatoes, carrots, onions, Brussels, bay and parsley; stir and bring to a simmer. Cover pan and transfer to oven.
Roast stew about 2 1/4 hours then add the peas and roast another 15 minutes. Remove from oven, season with salt and pepper, and serve with bread and butter alongside.