Pre heat the oven to 350 F and grease a 6-inch round pan with oil or butter. Layer a parchment paper at the bottom of the pan.
Whisk butter and sugar until it’s all mixed together.
Add one egg at a time and mix it with the butter and sugar.
Next, sift the all-purpose flour, almond flour, baking powder, cardamom powder, nutmeg powder and salt.
Using a rubber spatula, mix the dry ingredients to the egg mixture. The batter will be quite thick.
Pour the batter into the prepared pan and level the top.
Slice the plum into wedges and press it on top of the cake batter. Sprinkle slivered almond and sugar.
Bake for 40 to 45 minutes or until it’s baked through! Poke a knife or chopstick in the center of the cake and if it comes out clean, it’s ready.
Let me cake rest for 5 minutes before you take it out of the pan.