Heat oven to 190C/170C fan/gas 5.
Tip the butter beans into a bowl and
mash with a fork to form a rough purée.
Set aside. Heat 1 tbsp of oil in a small
frying pan and add the onion and garlic.
Cook over a gentle heat for 3-4 mins,
Stir the onion mixture into the butter
beans, along with the cheese, then
season. Shape the mixture into 4 patties,
cover and chill for 10 mins.
Put the cherry tomatoes in a small
roasting tin and season with salt and
pepper. Roast for 10-15 mins, until tender.
Tip the flour, egg and breadcrumbs
onto three separate plates. Roll each
patty in the flour, dusting off any excess,
carefully roll in the egg, then finally coat
in the breadcrumbs.
Heat remaining oil in a non-stick frying
pan and add burgers. Cook for 8-10 mins,
turning occasionally until golden. Drain
on kitchen paper and serve with the
roasted tomatoes and rocket.