Remove the broccoli florets and set to one side
Peel the onion
De-string the celery if necessary
Peel the potato
Cut the vegetables into bite-sized chunks, including the broccoli stalk
Warm the fat or oil in the pressure cooker on 'sear' setting (or warm through in a large pan on the hob).
Turn the heat to medium and cook the onion for 5 minutes, stirring occasionally.
Add the celery and broccoli stalk chunks and continue to cook for 5 minutes
Add the potato and the stock. Pressure cook on medium for 15 minutes or bring to the boil on the hob and cook for 20-30 minutes until the potato is really soft.
Add in the broccoli florets and cook for 3-5 minutes
Crumble or grate and then stir through half of the stilton.
Blend with the stick blender and taste, season as necessary with salt and pepper
Serve with the remaining cheese crumbled into each bowlful