Fry the chopped onion in olive oil
until soft. Add soft brown
sugar, wine vinegar and Cajun seasoning.
Cook for 1 min then add the mixed
beans and chopped tomatoes
with garlic. Simmer for 10-15 mins until
the sauce has thickened then season.
Scatter handful grated cheddar onto
tortilla chips. Microwave on High
for 1 min until cheese has melted.
Serve alongside the dip (top with some
chopped avocado if you like). Make ahead
and reheat dip before guests arrive.