Heat oven to 180C/160C fan/gas 4.
Heat the olive oil in a large frying pan, tip
in the onion and garlic, then cook over a
medium heat for 10 mins until softened
but not browned. Add the tomato purée,
cook for a further min, add remaining
ingredients, then simmer for 2-3 mins.
Season generously, then stir in the beans.
Tip into a large ovenproof dish, then bake
for approximately 1 hr, uncovered and
without stirring, until the beans are
tender. The beans will absorb all the
fabulous flavours and the sauce will
thicken. Allow to cool, then scatter
with parsley and drizzle with a little
more olive oil to serve.