Buttery potato and leek soup with croûtons

1.Heat half the butter over medium heat in a large saucepan, add leeks, a good pinch of sea salt flakes and 8 grinds of black pepper. Increase heat to high and cook until leeks start to soften (2-3 minutes). Add potato and stock, bring to the boil, and cook over high heat until potato is falling apart (30 minutes), adding cream in last 2 minutes of cooking. Blend with a stick blender and season to taste.

2.Meanwhile, heat remaining butter in a frying pan over medium-high heat, add croûtons and toss until evenly golden (3-5 minutes). Add parsley and toss again, then serve soup in bowls and top with croûtons.