1. Prepare the Dough

• In a large mixing bowl, cream the softened butter and sugar together until light and fluffy.

• Add the egg yolk and vanilla extract, mixing until fully combined.

• Gradually add the flour and salt, mixing just until a soft dough forms.

• Divide the dough in half, wrap in plastic wrap, and chill for 30 minutes.

2. Shape the Cookies

• Preheat your oven to 350°F (177°C) and line a baking sheet with parchment paper.

• Roll the chilled dough into 1-inch balls and place them 2 inches apart on the prepared baking sheet.

• Use your thumb or the back of a small spoon to gently press a well into the center of each dough ball.

3. Add the Jam

• Fill each indentation with about 1/2 teaspoon of jam.

• Be careful not to overfill to avoid spillage during baking.

4. Bake the Cookies

• Bake the cookies for 12–15 minutes, or until the edges are lightly golden.

• Remove from the oven and allow them to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.

5. Garnish and Serve

• Once completely cooled, optionally dust the cookies with powdered sugar for an elegant finish.

• Serve and enjoy, or store for later use.