If you have whole chia seeds, grind them first (a coffee grinder works well).
Mash banana in a large bowl. Add the rest of the ingredients and mix well.
Taking about 2 tbsp of the mixture for smaller balls or a 1/4 cup of the mixture for large, roll into balls and place on a cookie tray.
Once all the balls are formed, you can roll them in optional toppings such as shredded coconut and crushed nuts or seeds.
Place in the freezer on the cookie tray. Once frozen, they can be transferred to an airtight container and stored in the freezer until ready to eat.