Preheat the oven to 350 degrees F.
Mix the chia seeds and water in a small bowl. Set aside for 10 minutes to thicken.
Once the chia seed mixture is ready after 10 minutes, use another bowl to cream the butter and sugar until fluffy.
Add in the chia seed mixture and mix again. Then add in the milk and vanilla and continue mixing.
In a separate bowl, whisk together the flour, cocoa powder, salt and baking powder.
Add the dry ingredients to the wet ingredients and stir until just combined (don't over-mix).
Stir in the chocolate chips.
Oil six spots in a regular sized cupcake tray.
Evenly divide the mixture into the 6 sections.
Bake for 35 minutes. Check to make sure a toothpick inserted comes out clean before removing from the oven.
Allow the brownie bites to cool down, then enjoy (I recommend vegan whipped cream or ice cream on it!)
Store at room temperature in an airtight container.