Begin by peeling the apple and onion, then chopping both until chunks. Add them to a medium sized pan with an inch of water and cook on a low-medium heat for about 5mins with a lid securely on top until the onions and apple pieces reduce and soften. The apple will become mushy and the onions translucent.

Next, add the remaining ingredients to the pan, simmer over a medium heat for just a few minutes to heat through.

Then use a hand/stick blender to blend until smooth.

You can use this straight away or allow to cool and store in the fridge for up to 3 days or freezer for 3 months in a suitable container.