Sauté Aromatics: Heat rapeseed oil in a large saucepan over medium heat. Add the chopped onion and minced garlic. Sauté for about 3 minutes until softened.
Add Vegetables: Stir in the diced potato and cook for another 5 minutes.
Simmer with Stock: Pour in the vegetable or chicken stock. Bring to a gentle simmer and cook for 10 minutes.
Add Broccoli: Add the broccoli florets and cook for another 5 minutes until tender.
Blend Until Smooth: Remove from heat and use a stick blender to blend until smooth.
Incorporate Stilton: Stir in the crumbled stilton cheese and milk. Mix until fully melted and smooth.
Season & Serve: Adjust seasoning with salt and pepper. Serve warm with optional toppings.