Finely chop onion and mince garlic.
If using garlic powder add this when you do the other herbs and spices.
Cut skin off pumpkin, remove seeds and cut into bite-sized chunks.
Peel potatoes and cut into bite-sized chunks.
Add a splash of oil to a wok or large fry pan. Cook onions on a medium heat for 5mins till starting to change colour.
Add in garlic and fry for a minute or two, then add all the herbs and spices. Fry for another minute or two adding a splash of water to stop from drying out and burning.
Add in pumpkin and potatoes. Toss into the spices for a minute or two. Again, adding a splash of water to stop it from drying out.
Rinse and drain beans. Add to fry pan with tomatoes, stock cube and salt. Give everything a good stir, put the lid on and reduce to a simmer.
Cook for another 15 -20mins till the pumpkin and potatoes are tender and the chili has thickened. Season to taste with lime juice, salt and pepper. Add extra chili if desired and garnish with sour cream, cheese and coriander.