Drain the cherries and collect the juice. Stir starch and 4 tablespoons of juice until smooth. Squeeze lemon. Boil up the rest of the cherry juice, lemon juice, cinnamon stick and 1 tbsp. sugar. Stir mixed starch into the boiling juice.
Bring to the boil again and simmer for about 2 minutes, stirring continuously. Remove the cinnamon stick, fold in the kirsch and cherries.
Melt 2-3 tablespoons of butter in two pans. Spread the spaetzle into the pans and fry for about 10 minutes. Sprinkle each with 2 tbsp. poppy seeds and sugar, fold in well and let the sugar caramelise briefly.
Serve the spaetzle with the hot cherry compote. Dust thickly with powdered sugar. Delicious with it: ...vanilla sauce.