Preparation Steps

• Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.
• In a large bowl, cream together the softened butter and sugar until light and fluffy, about 2-3 minutes.
• Beat in the egg yolk and vanilla extract until well combined.
• In a separate bowl, whisk together the flour and salt. Gradually add the dry ingredients to the butter mixture, mixing until a soft dough forms.
• Roll dough into 1-inch balls and place them 2 inches apart on the prepared baking sheets.
• Use your thumb or the back of a spoon to make a small indentation in the center of each cookie.
• Fill each indentation with about 0.5 teaspoon of jam.
• Bake for 10-12 minutes, or until the edges are lightly golden.
• Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.