Spread the fig spread on one side of each slice of bread. Take one of the slices with the fig spread facing up. Then add half of the brie, prosciutto and apple slices. Top with the rest of the brie. Place the second slice of bread on top with the fig side facing down. Butter the top of the bread.
Meanwhile heat a cast iron skillet or frying pan to medium high heat. Melt enough butter to cover where the sandwich will go. Place the sandwich butter side down. Then butter the other side of the sandwich. After a minute, check the bottom with a spatula. Once it is golden brown, flip it over. Cook until both sides are golden brown. Enjoy!
*Room temperature butter makes it easier to spread. If you are impatient like me, put a little butter in a ramekin or small bowl and microwave for 10 seconds. It may be a little melty but that's okay.