> **A tip from Zdzisława:**
> "Thank you! With the leftover egg whites, I whip them into a foam with 1/2 cup of sugar and 3 tablespoons of potato flour. I spread that over the apples, grate frozen dough on top, and put it in the oven. It’s delicious! 👍"
>
### **Ingredients**
#### **The Dough**
* **1 block** of butter (approx. 200–250g)
* **1 cup** of sugar
* **3 cups** of flour
* **2 teaspoons** of baking powder
* **3 egg yolks**
#### **The Apple Mousse**
* **1.5 kg** of apples
* A splash of water
* Lemon juice
* Sugar (to taste)
* Cinnamon (to taste)
### **Preparation**
1. **Prepare the Dough:** Knead all the dough ingredients together until combined. Place in the refrigerator to chill for **2 hours**.
2. **Prepare the Mousse:** Dice the apples (keeping the skin on). Place them in a pan with a little water, lemon juice, sugar, and cinnamon. Cook for about **10 minutes** until you reach the desired consistency.
