How to Make It
Generously grease an 8-inch square baking dish with 1 tablespoon of the butter.
Place white chocolate, nutmeg, salt, and remaining ½ cup butter in a large microwave-safe bowl; microwave on MEDIUM until melted and smooth, about 1 minute, stirring every 20 seconds.
Stir in brandy until incorporated. Add powdered sugar, 1 cup at a time, whisking vigorously after each addition. Fold in cherries and transfer mixture to prepared dish, smoothing top. Cover with plastic wrap, and chill until firm, about 2 hours. Let fudge stand at room temperature 30 minutes before cutting into 1½ inch pieces. Layer between sheets of wax paper in an airtight container, and store in refrigerator for up to 1 week.