For the dough, put 600 g flour, 200 g sugar, butter in flakes, cream cheese and 2 eggs in a mixing bowl. Knead first with the dough hooks of the mixer. Then knead quickly with your hands to a smooth dough.
Cover and chill for about 1 hour.
For the filling, peel the pears, quarter them, remove the seeds and cut them into pieces of about 2 cm. Mix with rum and half lemon juice. 1⁄4 Bring l water, quince jelly and 50 g sugar to the boil. Covered pears and simmer for about 5 minutes.
Mix the pudding powder with 4 tablespoons of water and stir into the compote. Simmer for 1 minute while stirring. Leave to cool.
Roll out half of the dough on a lightly floured sheet of baking paper the size of the fat pan. Use the paper to pull onto the fat pan (32 x 39 cm; deep baking tray). Sprinkle with breadcrumbs.
Pear compote on it distribute, besides, all around 1-2 cm of edge leave free.
Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Roll out remaining dough to the same size on floured baking paper. Use the paper to carefully roll out the dough onto the pears. Remove the paper.
Press the edges of the dough well together.
Carefully prick the lid of the dough several times with a fork. Whisk 1 egg. Spread the dough with it. Bake in the hot oven on the lower shelf for 35-40 minutes. Remove from oven and let cool down.
For the Möwenschiet icing, stir icing sugar with 3-4 tablespoons lemon juice until smooth. Cut the cake into pieces, sprinkle with the icing and leave to dry.