Season the beef with salt and pepper and had to a heated oil in a pan. Cook for 1-2 minutes until sealed on all sides. Once browned, put in the slow cooker.
Add the onions, potatoes, carrots and peppers to the slow cooker.
Add the garlic, flour and paprika.
Add the tomatoes, tomato puree, stock and water.
Stir well to mix everything together. Cook on high for 5 hours.
Before serving, add 250ml sour cream and the chopped parsley.
Video
Notes
You can opt for a lean cut of beef and then chop off any visible extra fat.
Swap the sour cream for Greek yogurt or a reduced fat creme fraiche. Greek yogurt is high in protein too, which is an added bonus.
Give this sauce even more depth of flavour with a splash of red wine.