Preheat the oven to gas mark 6/200*C/400F.
Open up a Bakewell medium sized oven bag and place four burgers inside.
Tie the bag loosely with one of the ties provided and place in the middle of the oven. Cook for 25 minutes.
Whilst the burgers are cooking prepare the avocado by destoning and scooping out the middle.
Once the burgers are cooked, carefully remove them from the oven bag.
Cut a brioche bun in half and place the burger inside also adding: sliced cheese, prepared avocado, cooked bacon, lettuce, tomato and red onion.
Add tomato or burger sauce to taste and enjoy 🙂