Prepare the vegetables and then place all of the ingredients in your slow cooker pot.
1 medium onion, 550 g parsnips, 1 large Bramley cooking apple, 2 vegetable stock pots (or stock cubes), salt and pepper, 2 tsp cumin, 1.5 litre approx boiling water from the kettle
Cook on high for 3 hours (or on low for 6-8 hours) and then blend using a hand blender before serving.