Put the butter and sugar in the jug, whisk: 2 mins at speed 3.
Remove the mixture from the walls with the help of a spatula and add the egg and salt, incorporate: 1 min. speed 4.
Combine flour, cocoa and cinnamon, mix: 30 sec. speed 4.
Add milk, vanilla and baking powder, mix: 1 min. speed 4.
Incorporate the washed and pitted cherries and mix with mixture using a spatula.
Pour the mixture into a pan (I used a 26 cm one) covered with parchment paper and bake in preheated oven at 170°C for about 25-30 minutes, do the toothpick test.
Allow to cool completely and serve with a sprinkle of powdered sugar... Enjoy your meal!
If you want a higher cake use a smaller pan.