Updated Rum Balls

Name: Updated Rum Balls
Ingredients: 4 ounce unsalted butter (1 stick), cut into chunks, at room temperature; 3/4 cup packed light brown sugar; 1/4 cup sugar; 1/4 teaspoon salt; 1 large egg, room temperature; 2 teaspoon pure vanilla extract; 1/4 teaspoon freshly grated nutmeg; 1 cup all-purpose flour; 1 cup white chocolate chips; 1/4 cup dark rum; colored sugar of your choice