Preheat oven to 180°C fan / 400°F / Gas 6
Grease or line a 20-25 cm (8 inch) baking dish with butter. Set aside.
Sour cherries: In a small bowl, add the pitted sour cherries with half the brown sugar, mix and set aside.
Cake batter: In a medium bowl, mix the melted butter, remaining sugar, cream (or milk) and salt.
Then add the flour, baking powder, cinnamon and continue mixing until the batter is smooth.
Scrape the batter into the greased baking dish and spread evenly until level.
Spoon the sour cherries and all their juices over the top of the cake batter.
Finally, sprinkle 1 tablespoon of brown sugar over the top.
Baking: Bake for 20 to 25 minutes, until a toothpick inserted in the middle of the cake comes out clean.
Remove from the oven and allow to cool for 5 minutes before serving warm with ice cream.