In a large pot, fry onion and celery for 3 min.
Add garlic and turmeric and lightly fry for 1 min.
Add butternut, carrots and potatoes and fry for 3 min.
Add 400ml cold water to the pot, stir in the contents of the sachet of KNORR Mild Durban Curry Dry Cook-in-Sauce and bring to the boil while stirring.
Add baby marrows and simmer uncovered for 20 min, stirring occasionally.
Add the beans and simmer for a further 20 min. Stir in coriander.
Serve hot with basmati rice.