Beat the eggs and sugar in a bowl. Add the softened butter and continue beating to a fluffy cream.
Mix the dry ingredients and add them, spoon by spoon, to the beaten eggs. Peel the pears and clean them of their seeds.
Dice 1 pear and add it to the dough. Stir and then transfer the dough to a buttered and floured tray.
Cut the other pear into thin strips, arrange them on top of the dough. Sprinkle the strips with sugar on top.
Bake the cake in a preheated 338°F (170 °C) oven. Sprinkle the ready cake with powdered sugar.