Pre heat oven to 200 degrees (fan). When you start cooking your sausages, use a non-stick baking tray and oven cook them in a drizzle of vegetable oil. I keep turning my sausages throughout. When they are not far off and browning nicely, open the oven door, and pour the Yorkshire pudding batter in between each sausage while the oven door is still open. Then quickly shut the door and do not open again and till it’s all cooked - this part will probably take another 20 mins or so.