The best tuna mornay

The best tuna mornay
Best for weeknight meals.

Tuna mornay is a delicious meal that is perfect if you’re running out of dinner ideas and looking for something a little different. Tuna is the cheapest and easiest meal option and works perfectly in this dish. 

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If you don’t feel like being in the kitchen all night or spending a fortune but still want to present a mouthwatering meal for you and your family, this is the perfect recipe for you.


  • 50g butter, chopped
  • 1 onion, peeled and chopped
  • 1/3 cup plain flour
  • 1 litre full cream milk
  • 1 chicken stock cube
  • 1 tbs dijon mustard
  • 2 x 425g cans tuna in spring water, drained
  • 1/3 cup coarsely chopped fresh continental parsley
  • 250g tasty cheese, coarsely grated
  • 3/4 cup breadcrumbs


  1. Preheat oven to 220C fan forced. In a large saucepan melt butter. Add onion and stir for 5 mins. Add flour and mix in.
  2. Add milk very slowly for about 5-7 mins and whisk. Crumble stock cube and mix in. Add mustard and whisk. Bring to the boil.
  3. Reduce heat and let simmer for 5 mins. Stir constantly until thick. Remove from heat. Add tuna, half the parsley and half the cheese. Stir until mixed in completely. Transfer mixture to an oval 6-cup capacity oven-proof dish. 
  4. In a small bowl, mix breadcrumbs into remaining parsley and cheese. Scatter over tuna mixture. Bake until golden for 10-12 mins.

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