These classic Hungarian Thumbprint Cookies are made with a tender buttery dough, filled with a sweet and fruity jam, and topped with a crunchy walnut coating.
Preheat your oven to 180C/350F and line a baking tray with greaseproof paper.
Place the butter, sugar and vanilla extract into a bowl and beat on medium until pale and fluffy.
Add the egg yolks and lemon peel and beat until combined.
Toss in the flour and beat until a dough is formed and no dry portions remain in the base or edges of your bowl.
Divide the dough equally into cookie portions and place 6-8 onto your baking tray with 1 inch gap between.
Press an indent into the center of the cookies with your thumb.
Brush the egg white over the top of the cookie and press into your walnuts.
Repeat with the remaining cookies.
Bake until lightly golden, approximately 20 minutes.
Remove and allow to cool for 5 minutes before transferring to a cooling rack.
Spoon the jam into the center of the cookies and allow to rest for several hours or preferably overnight before serving.
Dig in!
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Notes
Sugar: Confectioner's or icing sugar is used here for it's fine texture that helps give our cookies their melt-in-your-mouth texture and cannot be substituted for the same results with any other sugar.
Walnuts: A nice light nuttiness comes from raw walnuts, though you could replace with roasted walnuts or even hazelnuts for a less traditional take.
Jam: The jam in the recipes researched were all apricot, though you could replace with one you prefer.
Scoop: The size of the scoop used here is 4cm or 1.57 inches to create the perfect small scoop. If you don't have one this size a great substitute would be a tablespoon which would create a similar sized cookie.