Melt 1 Tablespoon butter in a heavy large skillet over medium heat. Add apple slices and sauté until golden on both sides, but still slightly firm. Remove from pan and set aside.
Spread butter on one side of the bread slices. Turn slices over and spread a thin layer of Maple Bacon Onion Jam or Bourbon Pear Onion Jam on each slice. Layer cheese, ham and apples on 4 slices and top with remaining slices of bread.
Cook sandwiches over medium heat until the cheese melts and the sandwich is golden brown on both sides. Add more butter to the pan if needed.