Preheat your oven and prepare a lined baking tray to ensure even baking and prevent sticking.
Mix dry ingredients thoroughly so the cacao and leavening agents are evenly distributed for consistent flavor and texture.
Cream butter and sugar until light and fluffy to create a soft, tender cookie base.
Add egg and vanilla, mixing until smooth to properly bind the ingredients and enhance flavor.
Combine wet and dry ingredients carefully without overmixing to maintain a soft cookie texture.
Scoop and bake until edges are set but centers remain soft for the ideal chewy consistency.
Cool slightly before transferring to maintain structure and prevent breakage.