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Salmon & Asparagus One-Pot Gratin Recipe


  • Author: Ben
  • Total Time: 30 minutes
  • Yield: 4 servings 1x
  • Diet: Low Salt

Description

This Salmon & Asparagus One-Pot Gratin is a creamy, comforting dish combining tender salmon fillets and fresh asparagus in a rich parmesan cream sauce, topped with a golden, crispy cheesy breadcrumb crust. Perfect for an elegant dinner that’s simple to prepare and delightfully flavorful.


Ingredients

Scale

Cheesy Breadcrumb Topping

  • 30g dried breadcrumbs
  • 2 sprigs parsley, leaves picked and chopped
  • 100g parmesan cheese (divided, 25g for topping, 75g for sauce)

Sauce & Main

  • 1 tsp olive oil
  • 25g unsalted butter
  • 1 red onion, finely chopped
  • 1 garlic clove, crushed or finely grated
  • 300ml double cream
  • 100ml milk
  • 500g asparagus, trimmed and halved
  • 4 skinless salmon fillets

Instructions

  1. Prepare the breadcrumb topping: In a small bowl, combine 30g dried breadcrumbs, chopped parsley leaves from 2 sprigs, and 25g parmesan cheese. Set this mixture aside for later use.
  2. Sauté the onion: Heat 1 tsp olive oil and 25g unsalted butter in a large flameproof casserole dish over medium heat. Add 1 finely chopped red onion and cook for about 5 minutes until it starts to soften.
  3. Add garlic: Stir in 1 crushed or finely grated garlic clove and cook for an additional 1 to 2 minutes to soften and release flavor.
  4. Create the cream sauce: Pour in 300ml double cream and 100ml milk, then add the remaining 75g grated parmesan cheese. Bring to a gentle simmer, stirring occasionally until the cheese has completely melted. Season well with salt and pepper, stir, then remove the sauce from the heat.
  5. Add asparagus and salmon: Tip in the 500g trimmed and halved asparagus spears, making sure they are submerged in the cream sauce. Nestle 4 skinless salmon fillets in the sauce, placing them skin-side down.
  6. Top and bake: Evenly scatter the prepared cheesy breadcrumb mixture over the salmon fillets. Transfer the casserole dish to a preheated oven at 200°C (180°C fan)/Gas Mark 6. Bake for 14 to 16 minutes, until the salmon is cooked through and the breadcrumb topping turns lightly golden and crispy.

Notes

  • Use fresh, high-quality salmon fillets for the best flavor and texture.
  • Ensure asparagus is fully submerged in the sauce so it cooks evenly and absorbs the creamy flavors.
  • If you prefer a stronger garlic flavor, you can add an extra clove.
  • The dish can be paired nicely with a simple green salad or crusty bread to soak up the sauce.
  • For a lighter variation, substitute the double cream with half cream and add more milk.
  • Prep Time: 10 minutes
  • Cook Time: 20 minutes
  • Category: Main Course
  • Method: Baking
  • Cuisine: European

Keywords: salmon gratin, asparagus gratin, one-pot recipe, creamy salmon dish, dinner, baked salmon, parmesan sauce