INGREDIENTS
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1/4cuptomato paste
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2tablespoonscornstarch
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1poundcarrots—peeled, cut into 2-inch pieces, and halved lengthwise if thick
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1poundbaby potatoes (about 15)
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1medium onion, cut into 1/2-inch wedges (root end left intact)
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2stalks celery, cut into 1-inch pieces
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2bay leaves
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13-pound beef chuck roast, tied
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kosher salt and black pepper
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1tablespoonchopped fresh flat-leaf parsley