Ingredients for - Plum Upside-Down Cake

1. Butter 2 tablespoons
2. Brown sugar, or to taste 2 tablespoons
3. Blanched almond flour 1 ½ tablespoons
4. Plums, pitted and sliced 3
5. Unsalted butter, softened ½ cup
6. White sugar ½ cup
7. Egg, at room temperature 1
8. Vanilla extract, or to taste ¾ teaspoon
9. All-purpose flour 1 ½ cups
10. Baking powder 2 teaspoons
11. Salt ½ teaspoon
12. Ground cinnamon ½ teaspoon
13. Milk, at room temperature 1 cup

How to cook deliciously - Plum Upside-Down Cake

1 . Stage

Preheat the oven to 350 degrees F (175 degrees C). Drop butter into an 8-inch square and let melt in the preheating oven.

2 . Stage

Remove the pan from the oven and tilt to coat the bottom evenly with butter. Sprinkle brown sugar and almond flour on top. Arrange plum slices over the mixture.

3 . Stage

Beat softened butter and sugar together until light and creamy. Mix in egg and vanilla extract until fluffy.

4 . Stage

Sift flour, baking powder, salt, and cinnamon together in a separate bowl. Add to the butter mixture alternately with the milk, folding just until dry spots disappear. Pour batter evenly over the plums; tap pan onto the counter to expel excess air bubbles.

5 . Stage

Bake in the preheated oven until a toothpick inserted into the center comes out clean, 40 to 45 minutes.

6 . Stage

Cover the pan with a serving plate and immediately invert cake onto the plate. Let cool until no longer hot, about 15 minutes. Cut and serve warm.