Chop the marzipan and stir with a little yoghurt until smooth. Mix with the leftover yoghurt and 1 teaspoon lemon juice. Whip the cream with the sugar until very stiff and fold in carefully.
Cut the pears into eighths, core them, cut into fine leaves and drizzle with the remaining lemon juice.
Layer the pear leaves alternately with the marzipan yoghurt in dessert glasses and serve the dessert sprinkled with chocolate sprinkles.