For the brownies, divide 125 g chocolate into pieces. Melt with butter in a hot water bath. Let it cool down a little. Mix flour, baking powder and cocoa. Beat the eggs with sugar and 1 pinch of salt until light creamy. First stir in liquid chocolate, then flour mixture. Spread the dough into eight greased and flour-blasted hollows of a muffin tray (twelve hollows).
Bake in a preheated oven (electric oven: 180 °C/circulating air: 160 °C/gas: see manufacturer) for 15-20 minutes. Remove and immediately press depressions into the still soft muffins. Allow to cool slightly, then carefully remove from the wells and allow to cool. Put 4 brownies aside for a later occasion. They keep for 2-3 days when wrapped in aluminium foil or can be frozen.
For the dessert, drain the pears and cut some in half. Grate 25 g chocolate. Whip the cream until stiff, spread it into the brownies. Put pears on top and sprinkle with chocolate. Serve with chocolate sauce.