Peel and quarter the apples and cut out the core. Halve the apple quarters lengthwise and cut into slices. Mix apples, 2 tbsp. lemon juice, Calvados and 2 tbsp. sugar in a pot.
Bring to the boil, cover and stew for about 2 minutes. Mix starch and about 2 tbsp. cold water. Pour starch into the compote and simmer for about 1 minute while stirring. Put the compote into 4 greased, ovenproof small moulds (approx. 250 ml content/ 5 cm high, 9 cm Ø)
Beat the egg whites until stiff, then add 150 g sugar and continue beating for 1-2 minutes. Then add 1 tbsp. lemon juice and bitter almond oil and fold in the almonds carefully. Put the macaroon mixture into a piping bag with a large perforated spout and sprinkle it on the compote like a cord. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for approx. 10 minutes