Drain the cherries and apricots. Collect the cherry juice. Cut the apricots into quarters. Mix cornflour and 3-4 tablespoons of cherry juice. Put the rest of the juice and sugar in a pot and bring to the boil. Remove from the heat, add the mixed starch while stirring and bring to the boil again. Add cherries and apricots and fold in.
For the potato tart peel onion and chop finely. Wash the thyme, dab dry and chop finely. Add egg, milk, onion and thyme to the dumpling dough and knead. Form about 9 small balls and press them flat. Heat oil in a pan and fry the dumplings in it on each side for 2-3 minutes at medium heat. Arrange the cakes and compote on plates and serve garnished with parsley as desired.