Heat the olive oil in a large, deep frying pan or skillet over a medium heat. Add the sliced onion and red pepper with a pinch of salt and cook, stirring now and then, until soft and starting to caramelise.
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Heat the olive oil in a large, deep frying pan or skillet over a medium heat. Add the sliced onion and red pepper with a pinch of salt and cook, stirring now and then, until soft and starting to caramelise.