Salmon & asparagus one-pot gratin

• dried breadcrumbs↗30g g
• parsley↗2 sprigs

  leaves picked and chopped

• parmesan↗100g g
• olive oil↗1 tsp tsp
• unsalted butter↗25g g
• red onion↗1

  finely chopped

• garlic clove↗1

  crushed or finely grated

• double cream↗300ml ml
• milk↗100ml ml
• asparagus↗500g g

  trimmed and halved

• skinless salmon↗4

  fillets

Step-by-step instructions

1. 1

   Heat the oven to 200C/180C fan/gas 6. Combine the breadcrumbs, parsley and 25g parmesan, then set aside. Heat the oil and butter in a large flameproof casserole over a medium heat and fry the onion for 5 mins until starting to soften. Stir in the garlic, and cook for 1-2 mins more to soften slightly, then stir in the cream, milk and remaining parmesan. Bring to a simmer and cook until the cheese has melted, then season well, stir and remove from the heat.

2. 2

   Tip in the asparagus and ensure it is submerged in the sauce. Nestle in the salmon fillets, skin-side down. Scatter the cheesy breadcrumb mixture over the salmon fillets, then transfer to the oven and bake for 14-16 mins until the salmon is cooked through and the breadcrumb topping is lightly golden.