Score both sides of the fois gras with a sharp knife
Prep and plate the toast points
Heat a carbon steel pan over medium heat until very hot. Sear the fois gras for 1 minute (my slices were about 3/4″ thick) on the first side. Turn, season with a little flaky salt, then cook another minute until seared and warm in the center Remove from the pan and place on paper towels.
Lower the heat to medium low then add the diced apples and sugar to the rendered fois fat.
Saute and stir for 1-2 minutes until the apples are cooked
Remove the pan from the heat, carefully add the brandy then shake or tilt the pan to ignite the brandy. Flambe the apples while carefully shaking the pan until the flames die out.
Plate the fois gras on the toast points and spoon the apples and syrup over the fois gras.
Notes
Warning! If you cook the fois gras too long it will literally melt away!