Salmon Mornay Pasta Bake

Ingredients:
250g small pasta
60g butter
2 tablespoons plain flour
3 cups milk
1 egg
415g can salmon, drained and flaked (or tuna or herring)
4 green onions, chopped
1 tablespoon grain mustard
juice 1/2 lemon
salt and pepper
1 cup grated tasty cheese
1 cup dry breadcrumbs

Method:
Cook pasta following packet directions.
Melt butter in a medium saucepan.
Stir in flour, cook, stirring for 1 minute, remove from heat.
Slowly stir in milk, return to heat.
Cook, stirring, until sauce boils and thickens.
Stir in egg, simmer for 3 minutes.
Mix in salmon, onions, mustard, lemon juice and salt and pepper to taste.
Simmer for a further minute.
Pour salmon mixture into a saucepan of pasta and stir to combine.
Spoon mixture into casserole dish.
Sprinkle with combined cheese and breadcrumbs.
Bake in a moderate oven for 25 to 30 minutes or until heated through and golden.