Heat oven to 200C/180C fan/gas 6.
Pierce the sweet potatoes a few times
with a fork, then cook them in the
microwave on High for 8 mins or until
soft. Rub with 1 tsp of the paprika, 1 tsp
of the oil and some seasoning. Transfer
to a baking tray, put in the oven and cook
for 10-15 mins until crispy.
Meanwhile, make the beans. Cook
the onion in the remaining oil until
soft. Add the garlic, sugar, vinegar,
Worcestershire sauce and the remaining
paprika, and cook for a further 1-2 mins
until sticky. Tip in the beans, tomatoes
and a splash of water, and simmer until
the sweet potatoes are ready.
Serve the sweet potatoes with the
beans on top, a dollop of soured cream
and a pinch of paprika, if you like.