Break the cauliflower and broccoli into florets and cook in
lightly salted, boiling water for 8 - 10 minutes, until just tender.
Drain well and transfer to a flameproof dish.
Mix together the yoghurt, grated cheese, and mustard, then
season the mixture with pepper and spoon over the cauliflower and
broccoli.
Sprinkle the breadcrumbs over the top and place under a grill
until golden brown.
Serve hot.
Serves 4
When preparing the cauliflower and broccoli, discard the tougher part of
the stalk, then break the florets into even sized pieces, so they cook
evenly.
Broccoli and cauliflower make an attractive combination, and this dish
is much lighter than the classic cheese sauce.