01 -
In a medium bowl, whisk together flour, unsweetened cocoa powder, baking powder, and salt until evenly combined.
02 -
In a large mixing bowl, beat softened butter with granulated sugar until pale and fluffy. Incorporate the egg yolk and vanilla extract, mixing until fully blended.
03 -
Gradually add the dry ingredients to the wet mixture, mixing gently until a soft, cohesive dough forms.
04 -
Wrap the dough in plastic film and refrigerate for approximately 30 minutes to enhance manageability.
05 -
Preheat oven to 175°C. Line a baking sheet with parchment paper or a silicone baking mat.
06 -
Roll the chilled dough into 2.5 cm balls. Coat each ball thoroughly in chopped walnuts and arrange on the prepared baking sheet, spacing them 5 cm apart.
07 -
Press the centre of each ball gently with your thumb or the back of a small spoon to create a well for filling.
08 -
Bake for 10–12 minutes until the edges are set. The centres may puff up slightly; this is expected. Cool completely on the baking sheet.
09 -
In a small bowl, beat softened cream cheese with powdered sugar and vanilla extract until smooth and creamy.
10 -
Once cookies have cooled, spoon or pipe the cheesecake mixture into each thumbprint well.
11 -
Optionally drizzle filled cookies with melted chocolate and sprinkle with extra chopped walnuts. Chill in the refrigerator for 20–30 minutes to allow the filling to set before serving.