30 mins should do you a nice toad in the hole , very little prep and not too unhealthy if it’s based upon quality sausages. Alternatively finish off cooking something you part made made at home shepherds/cottage pie perhaps. We have used roasting bags for chicken successfully, takes a bit more than 30 mins but helps if you cut the chicken into two halves first. As Linda said cooking in the bag reduces washing up and keeps the oven clean. Bon appetite!