Add butter, maple syrup and salt to the bowl of your stand mixer fitted with a whisk (or food processor) and whip until the mixture is fully combined and light and fluffy.Start your mixer off on a low speed to avoid splatters and gradually increase it as the mixture comes together. If you have a splatter guard I encourage you to use it!At first, the mixture may seem like it's splitting, but keep whipping, all of a sudden you'll be rewarded with dreamy, fluffy whipped maple butter!