This cake is inspired by the famous New York Times Plum Torte, which became incredibly popular on social media a few years ago. Everyone seemed to be baking it, so I decided to give it a try too. Since then, it has become one of my favorite late-summer traditions. Every August and September, when sweet local plums are in season, I bake this cake at least once. It's soft, buttery, incredibly easy to make, and the juicy plums create the perfect balance of sweetness and tartness.
Preheat the oven to 180°C (350°F).
Line a baking pan with parchment paper or lightly grease it with butter.
Beat the butter and sugar with an electric mixer until light and fluffy.
Add the eggs one at a time, beating well after each addition.
Add the flour, baking powder, and salt. Mix on low speed just until a smooth batter forms.
Spread the batter evenly into the prepared baking pan.
Arrange the plum halves, cut side down, over the batter.
Mix the cinnamon and sugar together and sprinkle evenly over the plums.
If you'd like a little extra freshness, drizzle the plums with a small amount of lemon juice.
Bake for 45–50 minutes, or until the cake is golden brown and a toothpick inserted into the center comes out clean.
Let the cake cool slightly before serving.