Preheat oven at 350-degree Fahrenheit and prepare a large cookie sheet with parchment paper.
In a large mixing bowl combine oat flour, cocoa powder, baking powder and salt. Mix it well with a spoon until all the ingredients are well blended. (May take 2-3 minutes so do not rush through this step).
Combine ¼ cup chocolate chips in a microwavable bowl and melt it. (May take 1 – 1.30 minutes). Make sure to pause and stir at every 30 seconds so as to avoid over cooking.
Now, in the oat flour mixture, whip in melted chocolate, soaked chia seeds, maple syrup, vanilla extract. Mix and form a thick batter.
Fold in 2 tbsp chocolate chips to the batter. Do not over mix.
With the help of a medium sized cookie scoop, place 10 round cookies on the prepared cookie sheet. Roughly shape them with the back of a stainless-steel spoon by flattening each of the cookies lightly from the center and shaping as round as possible. Or else, you may grease the back of a small measuring cup with cooking spray and wipe it with a tissue then shape the cookies by pressing from the center. Roughly make the edges as round as well.
If desired top each of the cookies with extra 1-2 tbsp chocolate chips. Place the cookie sheet in the middle rack of the preheated oven and bake for 25 minutes. Once done, turn off the oven. Take out the cookie sheet and place it on a flat counter to cool down for 2-3 minutes without disturbing.
Then shift the cookies from the cookie sheet to the cooling rack and let them cool down. Enjoy!