In a bowl, beat butter and sugar until light and fluffy. This step helps create soft and tender cookies.

Add egg yolk, lemon zest, lemon juice and vanilla extract. Mix until smooth and well combined.

Add flour and salt slowly. Mix until a soft dough forms. Do not overmix to keep cookies tender.

Cover the dough and place it in the fridge for 15 minutes. This makes it easier to shape.

Roll dough into small balls. Place them on a lined baking tray, leaving space between each one.

Press your thumb gently in the center of each ball. Create a small well for the filling.

Bake in a preheated oven at 180°C (350°F) for 10–12 minutes. Edges should be lightly golden.

Remove from oven and let them cool completely. This helps them set and hold the filling.

In a bowl, mix powdered sugar and lemon juice. Add pink food coloring and stir until smooth.

Spoon the pink glaze into each cookie center. Let it settle and slightly set before serving.