Preheat the
oven to 190C/gas 5/fan 170C and
butter a shallow 2-litre dish. Tip the
spinach into a colander in the sink
and pour a kettleful of boiling water
over it. Leave it to wilt while you
make the cheesy base. (Or
microwave the spinach according
to the packet instructions.)
Break the
eggs into the bowl of a food
processor, pour in the milk, add the
mustard and 1 tsp salt. Tear in the
bread, crusts and all, then whizz
together until smooth. Tip the
mixture into a large bowl and grate
in three-quarters of the cheese.
Squeeze the
spinach, to get rid of all the water,
then stir it into the cheese mixture
and tip into the dish. Grate over the
remaining cheese, top with the
tomato clusters and bake for 30-35
minutes until risen and golden.
Cool and allow to settle a little
before serving.