Preheat grill pan or cast iron skillet over medium heat.
In a small bowl, mix together fig preserves and Dijon mustard. Spread mixture on both slices of bread. Layer one slice of bread with ham, Brie, and apple. Top with the other slice of bread. Butter the top of the bread and place, butter side down, in the pan. Butter the top slice of bread. Grill 3-5 minutes per side until golden brown and the cheese is melted. Serve immediately.