Hungarian Christmas Walnut Cookies (Hókifli)

Ingredients:

• 250 g all-purpose flour
• 200 g butter (cold, cubed)
• 100 g sour cream
• 1 egg yolk
• Pinch of salt

Walnut Filling:

• 200 g ground walnuts
• 80–100 g sugar
• 1–2 tbsp milk
• 1 tsp vanilla extract
• Zest of 1 lemon (optional)

For coating:

• Powdered sugar

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Instructions:

1. In a bowl, mix flour and salt.
2. Add butter and rub into the flour until crumbly.
3. Add egg yolk and sour cream, then knead into a soft dough.
4. Wrap dough and chill for 30 minutes.
5. For the filling, mix walnuts, sugar, milk, vanilla, and lemon zest until a thick paste forms.
6. Roll dough out thin and cut into small triangles.
7. Place a small amount of filling on each piece and roll into crescent shapes.
8. Place on a baking tray.
9. Bake at 180°C (350°F) for 12–15 minutes, until lightly golden.
10. While still warm, roll in powdered sugar.