Grease a 10 inch (26 centimeter) Fladen pan, pie pan, or springform pan with butter and lightly dust with flour or line with baking paper. Set aside.
On a lightly floured surface, roll the refrigerated dough into an even, thin circle about 14 inches (35 centimeters) wide.
Transfer to the prepared pie pan, pressing down along the bottom and edges to remove any air bubbles. If needed, carefully cut away any uneven edges.
Prick the bottom of the crust a few times with a fork, then cover with a thin, even layer of the red currant or raspberry jam.
Transfer the pan to the refrigerator while you prepare the filling.
Preheat a conventional oven to 400˚F (200˚C) and place a rimmed baking sheet larger than the pan on the bottom rack of the oven.
In a large bowl, whisk together the sugar and eggs until light and frothy.
Whisk in the heavy cream.
In a medium bowl, whisk together the 1 1/4 cups (160 grams) flour, cinnamon, cocoa powder, baking powder, cloves, ginger, and salt.
Whisk the spiced flour mixture into the cream mixture just until combined and no streaks remain.
Pour the batter into the chilled crust and lightly spread the top to create an even layer.
Transfer the pan to the preheated oven and bake for 15 minutes.
Decrease the temperature to 350˚F (180˚C) and continue to bake until the batter is set and a toothpick inserted in the center comes out clean, another 20-25 minutes.
Allow the Fladen to rest at room temperature for 10 minutes before removing from the pan.
Serve warm or at room temperature, optionally with a dusting of powdered sugar and dollop of whipped cream on the side.