Separate egg, chill egg white. Grate marzipan to the yolk, stir until smooth. Remove the seeds from the pomegranate and stir into the marzipan mixture, except for a few.
Wash and halve the apples and remove the core. Sprinkle the cut surfaces with 1 tsp. lemon juice. Spread the marzipan mixture on the apples. Place in an ovenproof dish. Bake in a preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for approx. 25 minutes
Beat the egg white until stiff, add 1 tsp. lemon juice and 4 tbsp. icing sugar. Spread the beaten egg white on the apple halves and sprinkle with almond flakes. Continue baking for 5-10 minutes until the beaten egg white and almonds are lightly browned. Decorate with remaining pomegranate seeds and lemon balm, dust with icing sugar