Place rack in the center of the oven and preheat to 350 degrees. Lightly grease a jellyroll pan and set aside.
In the bowl of an electric mixer, beat the butter and sugar at medium speed until fluffy, about 2 minutes. Add the coconut butter and beat until well combined, then add the egg, extract and salt. Add the flour a half-cup at a time, then the coconut.
Spread evenly in the prepared pan. Bake for 20–25 minutes or until a tester comes out clean. Cool completely in the pan on a wire rack. Sprinkle with powdered sugar before serving.
Recipe by The Tennessee Magazine at https://www.tnmagazine.org/nuttin-better/