Cream light butter, add diet nuts and egg. Mix flour with baking powder and cocoa, gradually fold in the milk until the dough falls from the spoon with difficulty tearing. Finally, fold in the morello cherries.
Divide the dough evenly among the paper cups, place on a baking tray and put in the middle of the oven heated to about 180 °C, bake for 15 to 20 minutes. Then cool and bring to the table in the paper cups.