Mix the substitute eggs and set aside. Check out how to make ground chia seed eggs above the recipe card.
Lightly grease a 9" x 13" baking pan. You want a thinner layer of brownies so we are going for this larger size.
In a medium bowl mix the flour, cocoa powder, baking soda, baking powder and salt together.
In a large bowl use a Hand Mixer and beat the oil, peanut butter, coconut sugar and milk mixture together.
Add the vanilla and mix.
Add in the flour mixture - half at a time.
Fold in the chocolate chips.
Turn into the prepared baking pan and smooth out evenly to all edges.
Bake at 350 degrees for 15 to 20 minutes.
Cool on a wire rack.
Cut into about 32 squares.
If you are making these ahead of time for an occasion you can freeze them at this point.