Preheat oven to 350ºF. Stir chia seeds and warm water together and set aside to gel up, about 5 minutes.
Place all cookie ingredients into a blender and pulse until well combined, making sure the dates are broken up and smooth. Spoon rounded spoonfuls onto a greased cookie sheet and bake about 15-16 minutes, or until the edges are dry and firm. Remove from oven and let cool on a wire rack while you make the glaze.
Make the glaze: combine Medjool dates, coconut milk, coconut oil, and maple syrup in a blender or food processor and process 'til smooth, adding warm water if desired. When the cookies are totally cool, drizzle glaze over tops of cookies and serve immediately.
Always glaze the cookies right before serving, as glazing them in advance will make them a bit soggy.
Notes
Glaze the cookies right before serving, to make them a bit soggy.