Lay one sheet of puff pastry out on a cutting board. Cut the sheet into 3 equal squares.
Cut the apple into slices and then cut the slices in half. Slice the brie into small slices about 1/4-1/2 inch thick.
Place the brie in the center of one square of puff pastry and then the apple slices on top of the brie.
Brush the edges of the puff pastry with egg wash. Pull each of the corners of the puff pastry up, meeting in the middle and covering the apples and brie. Gently pinch the corners together.
Place all the puffs. on a baking sheet and bake for about 20 minutes or until the tops of the puffs have browned. Once they are cooked, remove from the oven and put on a serving plate. Serve with fig jam or preserves on the side or dollop the top of each puff with a little jam.