Preheat oven to 180 degrees. Line a cookie pan and set aside.
Beat butter and sugar till fluffy. Add the egg and vanilla and beat till incorporated.
Whisk together the dry ingredients and add into the wet ingredients. Fold till combined.
Fold in the coconut and pistachios.
Drop spoonfuls of the mixture on the tray and flatten slightly. Keep at least an inch space between each cookie.
Bake for 10 minutes if cookies are small or 15 minutes for large cookies. Cool in pan for five minutes before transferring to wire rack and then cool completely.
Notes
Coconut and pistachios are optional. You can use add-ons of your choice like chocolate chip, walnuts, etc.