You can adjust sugar as per your taste or you can take half and half of granulated sugar and brown sugar. Make sure everything ingredient is on room temperature. In a bowl seive all the dry ingredients mix it well. In another bowl add peanut butter and butter and sugar mix these three until light and fluffy and almost more than double in size. It takes 15-20 minutes with electric beater and will take a lot of elbow grease if can do it by hands but choiceis yours. Then add egg and again mix.

Meanwhile preheat your oven at 180°C. Now mix the dry ingredients in the wet ingredients mix very well until everything is incorporated. Line a baking tray with parchment or butter paper. Now with a scoop or table spoon make equal portions of dough slightly press it roll it in sugar(optional) and make a criss cross with the help of folk.

Place it in the baking tray leave a gap so that cookies don't overlap while baking. Bake it in the middle rack for 14-15 minutes don't overcook otherwise it will burn. Keep an eye all the time while baking. You know much more better about your oven adjust the timing accordingly. Once done take out of the oven and place it on the cooling rack. When completely cool down put it in a air tight container and enjoy your own made cookies.
Happy Baking😊