Put all of the ingredients into the slow cooker (except the garam masala), pop the lid on and cook on HIGH for 5-6 hours on LOW for 7-8 hours.
The curry is ready when the vegetables are softened but not broken down. Stir in the garam masala before serving.
Serve with rice, poppadoms and mango chutney.
To make WITHOUT a slow cooker:
Did you make this recipe? Click here to let us know how it went and give it a ⭐️ rating! Your feedback helps us to make more recipes you really want.