Place all the ingredients, except the red pepper, noodles and stock, in the slow cooker and stir. Cook on high for 2 hours. Add the red pepper, noodles and stock, stir and cook for another 15-20 ...
Add to the slow-cooker, cover and cook for 12-15 minutes, or until the sauce is glossy and has thickened slightly. Serve the beef with steamed rice or boiled noodles and stir-fried vegetables.