Step 1

Heat the oil in a frying pan over a medium–low heat. Add the red onion and garlic and fry for 5 minutes, or until starting to soften.

Step 2

Add the tomatoes, beans and rosemary. Season with plenty of pepper and a small pinch of salt. Heat for 5 minutes, stirring occasionally.

Step 3

Toast the sourdough on both sides. Drizzle a teaspoon of oil over each piece and rub the toast with the garlic. Serve the beans on the sourdough.