Line a baking sheet with a piece of parchment paper. Lay the defrosted puff pastry sheet on the parchment paper. Make a pile of the cheese cubes in the centre of the puff pastry sheet. Dollop the fig jam within / on top of the cheese cubes.
Wrap the gruyere with the puff pastry by folding the corners over the cheese, working around in a circle to make a closed cheese package.
Brush all over with the whisked egg (egg wash) and then bake for 25-30 minutes until the pastry is a deep golden brown.
Allow to cool 5 minutes before using the parchment paper to help move the gruyere to a serving platter. Serve with crostini and crackers and enjoy!
Notes
Serve the baked gruyere cheese about 5 minutes after it's out of the oven as it will be the most melted; the cheese will start to harden after about 15-20 minutes. Don't fret, the baked gruyere cheese is still delicious as it cools.
Make crostini to serve with this baked gruyere: Preheat your oven to 400°F and slice your baguette into 1-inch thick slices. Brush the baguette slices with olive oil on one hand and place on a single layer on a baking sheet. Toast for 10 minutes, making sure to flip the slices halfway through.