12.45 pm: When the turkey is golden brown, remove it from the oven and cover it in tinfoil (to prevent it from browning further). (itv.com)
Once the crumble is done, remove the crumble from the pan to prevent it from browning anymore and place it in a bowl or plate to cool. (beyondthepeel.net)
This could prevent them from browning in the oven. (inspiredtaste.net)