preparations

• Melt the butter in the microwave or using a double boiler, and let it cool to room temperature
• Prepare the baking pan by greasing it with butter or using cooking spray, then dust it with flour. (Alternatively, you can line the pan with parchment paper.)
• Cut the nuts into larger pieces.
• Preheat the oven to 175°C (350°F) before baking.

Financier Batter

1. In a bowl, add the egg whites and granulated sugar. Mix them together until the sugar is dissolved. No need to whisk or beat vigorously.
2. Sift the almond powder, Cake flour, and baking powder into the bowl. Mix them together until well combined. If the almond powder is difficult to sift, you can lightly break up any lumps with your hands before adding it directly to the mixture.
3. Gradually add the melted butter to the mixture, stirring after each addition. Mix until the butter is fully incorporated and the batter becomes smooth. Pour the batter into the prepared baking pan.
4. After washing the apples, cut them vertically into thirds, avoiding the portion with the seeds. Cut both sides of the section containing the core as well.
5. Cut lengthwise into thin slices.
6. Place the sliced apples on top of the batter, alternating them in a vertical and horizontal pattern. Sprinkle the nuts around the apples.
7. Bake in a preheated oven at 175°C (350°F) for about 35 minutes.