I use cornflour kittylester as the thickener.
No butter unless I am trying to impress guests; there is plenty of fat in the cheese anyway, a tad of mustard powder, salt, pepper and a pinch of nutmeg. I use very strong Cheddar.
Grated cheese mixed with breadcrumbs (gf if needed) sprinkled on top makes the topping a bit more crunchy.
Lovely in a jacket potato too - you can't get crusty gf bread.
Retiring and living frugally in money from downsizing after years of stress
