Peel and chop the pumpkin into bite-size pieces. Finely chop the chilli.
Put the pumpkin pieces into the oven proof dish with the chilli, and roast at 200℃ for 1 hour.
Fry the finely chopped onions, ginger, chilli, bashed cardamom, mustard and cumin seeds together in the pan for around five minutes, keep stirring to prevent it sticking and burning.
Add in crushed garlic, roasted pumpkin and apples and stir for 10-15 minutes until all are soft.
Stir in Turmeric and brown sugar, letting it melt in.
Pour in the vinegar, add cinnamon sticks and season with 1 teaspoon salt, bring back to a boil and simmer for 30 minutes stirring regularly. Will be done when thick and brown.
Spoon the chutney into the sterilised jars, label and store them in a cool dark place for up to 6 months.
Once opened keep in the fridge and use within 6 weeks.