Heat a saucepan over medium heat. Add pitted cherries and maple syrup, bring to a boil. Reduce heat and simmer for 5-10 minutes, or until cherries are soft. Lightly crush cherries with a fork to mash.
Stir chia seeds into fruit mixture and remove from heat. Allow to thicken and let cool. Store in the fridge for up to two weeks or in the freezer for three months.