Grease a 22 cm diagonal pan with butter and sprinkle the entire surface with sugar.
Clean the tangerines, cut them in half.
Put them in the form cut down.
For the dough, beat the eggs with the sugar for 4-5 minutes or until they lighten in color, then add the melted and cooled butter, and mix a little more.
In a bowl, mix the flour, baking powder, and cinnamon, add the ingredients to the mixture and gently incorporate them with a spatula.
Pour the mixture into the mold over the tangerines.
Put the mold in the preheated oven at 180 °C for 35 minutes.
