1. Melt 3 Tbsp. butter in a skillet over medium heat. Add apples, sugar, cinnamon and cardamom; cook about 7 min., stirring frequently until most of the apple juices are reduced and the fruit is coated with a syrup. Remove pan from heat. Set aside.
2. Place 4 slices of the bread on a griddle. Top each with 1 slice of Wisconsin Havarti, 1/4 of the spiced apples, another slice of Havarti and top with remaining slices of bread. Butter sandwich tops. Turn over and butter again.
3. Place griddle over medium heat. Brown on each side 3 to 5 min., until golden and Havarti begins to melt. Cool 5 min. before serving.