For best results, cook from defrosted.
Leave the spare ribs in their bag at room temperature for 10 minutes prior to roasting, whether frozen or defrosted.
Remove rack from packaging and place onto a baking tray lined with baking paper.
Cook in a preheated oven at 200°C/ Fan 190°C/ Gas 6 for:

40 - 45 minutes from defrosted
55 - 60 minutes from frozen

Remove from the oven and allow to rest for 5 minutes before serving.
Ensure the product is piping hot throughout.
Do not reheat once cooked.