Put the raspberries in a pan with the vanilla and honey, then cook over a low heat for 5 mins or until the berries have broken down.
Stir through the chia and cook for 10 mins. Set aside to cool completely (it will thicken significantly as it cools). Spoon into a bowl or sterilised jar. Great on toast, swirled through porridge or in yogurt. Will keep in the fridge for up to one week.