These one of the soft cookies I've ever had, the perfect amount of sweetness but very chocolate forward.
I created these after I stopped eating Oreos due to them being highly processed, so I came up with these as an alternative. I wasn't a fan of the filling either, but feel free to make your own icing to fill these up.
Preheat oven to 350 F/ 176C
Mix all the dry ingredients in a mixing bowl: flour, cocoa powder, baking soda, salt
Whip the butter with the brown sugar until well incorporated and airy, then add in the egg and vanilla extract and mix well.
Slowly mix in the dry ingredients into the butter mixture until combined.
Portion out the cookie dough balls (3-4 TBS) and spread them about 4 inches apart on a baking tray with parchment paper.
Bake them for 8-12 minutes. I personally bake them for 8 minutes for the softest cookie, but leave it in there longer if you want a crisper cookie.
Sprinkle flaky sea salt once the cookies are out the oven and let it cool completely before serving.