Bring 1/4 litre of water, 100 g of sugar, 1 packet of vanillin sugar, cinnamon stick and lemon juice to the boil in a pot. In the meantime peel and halve the pears and remove the core. Steam the pear halves in the sugar solution for about 10 minutes.
Let it cool down on a sieve. Cream fat, remaining sugar and vanillin sugar. Add eggs, rum and milk bit by bit. Mix flour, baking powder and chocolate flakes and fold into the dough.
Cut the pears into slices. Put about 1/2 tablespoon of dough into each paper baking tin. Place 2-3 pear wedges on the dough and cover each with approx. 1/2 tablespoon of dough. Cover the tartlets with the remaining pear wedges.
Put the tartlets on a grate. Bake in the preheated oven (electric cooker: 175 °C/ gas: level 2) for about 20 minutes. Heat up the jam, pass through a sieve and spread it on the still hot pear wedges on the tartlets.
Let it cool down. Serve dusted with icing sugar. Makes about 12 pieces.