Place the prepared pumpkin, potato, onion, apples, and garlic into the slow cooker pot turned to high.
Add the vegetable stock to the pot. Sprinkle over the spices, and give everything a stir.
Cook on high for 4 hours, or on low for 8 hours.
Using a handheld blender, blend everything until smooth and season with salt and pepper to taste, if desired.
If the soup is too thick for you, add the extra hot stock and blend to combine. Alternatively, you can also add some milk and mix thoroughly.
Turn the slow cooker to low until ready to serve.
To serve, ladle into warmed bowls or hollowed-out pumpkins, and garnish with a swirl of milk or cream, pumpkin seeds, and/or chopped fresh red chilies. Enjoy!