1Preheat the oven to 175ºC with a rack in the center position. Grease the sides of a 23 cm round cake pan and line the bottom with parchment paper.
2Starting in the middle of the cake pan, arrange the thinly sliced plums in a circular motion, placing them so they overlap each other slightly. (I did three rings total.)
3In a large bowl with an electric mixer, beat the butter and sugar together on medium-high speed until fully combined, about 1 minute. Add the crushed cardamom and mix for another 30 seconds. Add the eggs, one at a time, and beat until combined and slightly light and fluffy, about 1 minute.
4In a separate bowl, mix together the flour, baking powder, and salt. Starting with the flour, alternate mixing in the dry ingredients and milk until just combined.
5In a small saucepan or saucier over medium heat, bring the sugar, water, and salt to a boil. Cook, without stirring, until golden brown, 5 to 7 minutes. Immediately, carefully pour the browned sugar over the arranged plums.
6Pour the cardamom batter over the plums, then spread the top into an even layer, making sure to not move the plums. Bake until the top is golden brown on the top and a toothpick inserted into the center comes out clean, 40 to 45 minutes. (If you’re using a cake pan with a removable bottom, place a baking sheet on a rack below to catch any drippings.)
7Transfer it to a wire rack to let cool in the pan, then run a knife or offset spatula along the sides. Place a serving tray or plate over the top, then carefully flip the cake upside down. Gently remove the parchment layer.
8Serve the upside down plum cake warm or at room temperature with freshly whipped cream, if desired.
Ingredients
Plum Layer:
3.5 medium plums
100 g sugar
56 ml water
0.5 tsp salt
Dough:
113 grams butter, room temp
150 g sugar
1 tbsp cardamom seeds
1 tsp vanilla extract
180 g flour
1.5 tsp baking powder
2 eggs
0.75 tsp salt
125 ml milk
Equipment
mixermortar and pestlesaucepanbaking panswhiskspatulaovencake standcolanderbowls
Tips
The use of whole cardamom seeds, gently crushed, enhances the flavor of the cake.
Using parchment paper at the bottom of the pan helps in easy release of the cake.