Preheat the broiler. Cover the potatoes with water in a pot; season with salt, cover and boil until the potatoes are fork-tender, 15 minutes.
Meanwhile, heat the oil in a stovetop casserole dish or shallow enamel pot over medium-high heat. Add the onion, carrots, celery, turnips and garlic. Season with salt and pepper and cook until the vegetables brown, 8 minutes. Add 1 1/2 cups cooking liquid from the potatoes to the casserole dish. Lower the heat and scrape up any browned bits with a wooden spoon. Tie the parsley stems with twine and add to the casserole. Cover and simmer until the vegetables are tender, 8 minutes. Stir in the Worcestershire sauce, 2 tablespoons butter and the chopped veggie burgers and warm through, 5 minutes. Remove the parsley stems and stir in the chopped parsley. Keep warm.
Drain the potatoes and mash with the remaining 3 tablespoons butter and the milk; season with salt and pepper and spoon over the casserole. Sprinkle with parmesan, if desired. Broil until golden brown, 5 minutes.
Tools You May Need
Photograph by Antonis Achilleos
Courtesy of Food Network Magazine
Tools You May Need
Price and stock may change after publish date, and we may make money off
these links.