If you want to use a slow cooker...
To get an even more intense flavour, try this in a slow cooker. Fry your onions in a pan for 8 mins, then add your garlic, spices and oregano and cook for a minute. Gradually add the mince until it's brown. Tip into your slow cooker with the tomatoes, peppers, sundried tomatoes and beans, crumble in the stock cubes and season to taste. Cook on Low for 8-10 hours.
Heat oven to 150C/fan 130C/gas 3. Heat the oil, preferably in a large flameproof casserole, and fry the onions for 8 mins. Add the garlic, spices and oregano and cook for 1 min, then gradually add the mince, stirring well until browned. Stir in the tomatoes, add half a can of water, then crumble in the stock and season.
Cover and cook in the oven for 30 mins. Stir in the peppers and sundried tomatoes, then cook for 30 mins more until the
peppers are tender. Stir in the beans.
To serve: Reheat on the hob until bubbling. Serve with avocado or a big salad with avocado in it, some basmati rice or tortilla chips and a bowl of soured cream.