Directions:

1. Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

2. In a large mixing bowl, cream together the softened butter and granulated sugar until the mixture is light and fluffy.

3. Add the egg yolks and vanilla extract, beating until well incorporated.

4. Gradually mix in the all-purpose flour and salt until the dough forms.

5. Roll the dough into 1-inch balls and arrange them on the prepared baking sheet.

6. Create an indentation in the center of each dough ball using your thumb or the back of a spoon.

7. Fill each indentation with blackberry preserves.

8. Bake the cookies for 12-15 minutes, or until the edges are lightly golden.

9. Let the cookies cool completely on a wire rack.

10. Drizzle lemon curd over the cooled cookies for a finishing touch.

Prep Time: 20 minutes
Cooking Time: 15 minutes
Total Time: 35 minutes
Nutrition:120 kcal per cookie
Servings: 24 cookies