Late Summer Plum Cake

Bahan-bahan (8 porsi)

• 1½ cups all-purpose flour, (spooned into measuring cup and leveled-off)
• 1½ teaspoons baking powder
• 1 teaspoon cinnamon
• ¼ teaspoon nutmeg
• ⅛ teaspoon cardamom
• ½ teaspoon salt
• 1/2 cup (1 stick) unsalted butter, softened, plus more for greasing the pan
• 1 cup + 2 tablespoons tablespoons sugar, (divided)
• 1 large egg
• 1 teaspoon vanilla extract
• ½ cup milk ((any kind))
• 1 lb plums, (pitted and quartered)