Heat the palm-oil in a pan for around 3 mins. It could get quite smoky, so makes sure windows are opened.
Add the onions and allow to soften, then add the garlic and the locust beans. Allow to cook for a minute to two, while stirring continuously.
Add the sweetcorn, pepper flakes, bell pepper and salt. Add two tablespoons of water to the pan. Allow to simmer for around 10 mins to allow the flavours to develop properly.
Add the spinach and basil. Stir properly, leave for 1 min and remove from heat.