The BBC Good Food logo
Haddock & leek au gratin with sweetcorn mash

Haddock & leek au gratin with sweetcorn mash

A star rating of 4.1 out of 5.13 ratingsRate
Magazine subscription – Try your first 5 issues for only £5
  • Preparation and cooking time
    • Prep:
    • Cook:
  • Easy
  • Serves 2

Leek and spinach are layered up with white fish fillets and cheese sauce then topped with golden mash in this delicious, low-fat oven bake.

  • Freezable
Nutrition: per serving
low infat13g


  • 350g potatoes , quartered
  • 195g can sweetcorn in water
  • 240g bag ready-washed spinach
  • 2 leeks , thickly sliced
  • 300ml skimmed milk , plus 3 tbsp
  • 15g unsalted butter
  • 15g plain flour
  • ½ tsp English mustard
  • 75g mature reduced-fat cheese , grated
  • 2 x 125g fillets of skinless haddock


  • STEP 1

    Heat oven to 200C/180 fan/gas 6. Boil the potatoes for 15-20 mins until tender, then drain. Reserve 3 tbsp corn and blitz the rest (with its juice) using a hand blender or a food processor until completely smooth, then mash into the potatoes. Cook the spinach following pack instructions – if you have a microwave, choose this method.

  • STEP 2

    Put the leeks in a pan with the 300ml milk and the butter. Cook gently, part-covered, for 8 mins until the leeks are tender. (Keep an eye on things as milk can easily boil over.) Mix the 3 tbsp milk with the flour and mustard, then stir into the leek mixture – keep stirring until thickened. Take off the heat and stir in three-quarters of the cheese.

  • STEP 3

    Squeeze as much liquid as you can from the spinach, then arrange on the base of 2 gratin dishes. Place a fish fillet on top of each, then spoon over the leek & cheese sauce. Top with the sweetcorn mash. Mix the remaining corn and cheese, and scatter on top. Place the dishes on a baking tray and cook for 25 mins until the fish flakes when tested and the top is golden.

Goes well with

Recipe from Good Food magazine, August 2014

Comments, questions and tips

Rate this recipe

What is your star rating out of 5?

Choose the type of message you'd like to post

Choose the type of message you'd like to post

Overall rating

A star rating of 4.1 out of 5.13 ratings

Sponsored content