Preheat the oven to 180 degrees
Cook the salmon en papillote, with some olive oil, clove garlic, squeeze of lemon and season with salt and pepper to taste, for 15 minutes
Boil the pasta for 15 mins until al dente
Cook the leeks in the butter and garlic, once softened season and add the flour to coat all the leeks
Add the milk a little at a time until you have a thick creamy sauce, now add the yogurt and mustard along with the parsley and mint and stir well – season well with black pepper
Add your cooked pasta to an oven proof dish, then add the salmon layer, flaking across all the pasta removing any bones.
Now add the creamy leeks over the top covering right to the edges
Sprinkle over the breadcrumbs and season lightly again
Put this in the oven until golden brown on top – about 15 minutes should do the trick!