Gregg Wallace and Denise MacDonald served up tasty cauliflower cheese with homemade white sauce on Eat Well for Less?
They also made a tasty white fish dish by adding chopped parsley to the white sauce (French rue0.

The ingredients for cauliflower cheese are: 600ml semi-skimmed milk, 1 onion, very thickly sliced, 1 medium cauliflower, cut into florets, 40g butter, 40g plain flour, ¼ tsp freshly grated nutmeg, 40g light mature cheddar, grated, ½ tsp English mustard, ½ small bunch flatleaf parsley, leaves picked and roughly chopped, sea salt and freshly ground black pepper.

See recipes from the series in the book titled: Eat Well for Less: Quick and Easy Meals, available from Amazon now.