Instructions

  1. Melt butter in a medium pan and fry the onion until tender.
  2. Remove pan from heat and stir in the flour, then return to low heat for a few minutes.
  3. Remove pan from heat once again and gradually stir in the milk, return the pan to the heat and stir until it becomes a white sauce and thickens.
  4. Add the cheese's and stir until its melted.
  5. Place tuna in a casserole dish and mix in corn, peas, celery, parsley, lemon juice and curry powder. Stir ingredients until combined and then season to taste.
  6. Mix breadcrumbs with melted butter (I make fresh breadcrums in the processor and add the butter to make it easier). and top the mornay with breadcrumbs.
  7. Place into 200c oven and heat for 10-15 minutes or until heated through and breadcrumbs are lightly browned.
  8. Serve.