Can't get hold of ready-made polenta?
Just make up a 500g pack regular polenta
following pack instructions, then pour
into a baking tray (approx 21 x 29cm size)
lined with baking parchment. When firm
enough, slice and use as in the recipe.
Heat oven to 220C/200C fan/gas 7 and
boil the kettle. In a bowl, mix the garlic
and tomatoes with seasoning, then pour
into a large baking dish. Place the spinach
in a large colander and pour boiling water
over until wilted. Rinse in cold water and
squeeze out all the excess water you can
with your hands. Roughly chop, season,
and scatter on top of the tomatoes.
Slice the polenta, then overlap on top
of the spinach. Drizzle with the oil and
bake in the oven for 10-15 mins. Scatter
over the cheese and return to the oven
for 5 mins more, or until the cheese is
golden and bubbling.