Preparation Steps

• Preheat oven to 350°F (175°C). Line a baking sheet with parchment paper.
• In a bowl, cream together the butter and sugar until light and fluffy. Beat in the egg yolk and vanilla extract.
• Gradually add the flour and salt, mixing until just combined.
• Roll the dough into small balls and place them on the prepared baking sheet.
• Use your thumb to make an indentation in the center of each cookie.
• Fill each indentation with strawberry jam.
• Bake for 10-12 minutes, or until the edges are lightly golden.
• Let cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.