#### **Step 1: Prepare the Cookie Dough**
Preheat oven to **350°F (175°C)**. Line a baking sheet with **parchment paper**.
In a large bowl, cream together **butter and sugar** using a mixer until light and fluffy.
Add **egg yolks and vanilla extract**, mixing until fully incorporated.
Gradually add **flour and salt**, mixing on low speed until a soft dough forms.
#### **Step 2: Shape the Cookies**
Roll dough into **1-inch balls** and place them **2 inches apart** on the prepared baking sheet.
Using your **thumb or the back of a spoon**, gently press an indentation into the center of each cookie.
#### **Step 3: Bake the Cookies**
Bake for **10-12 minutes**, or until the edges are lightly golden.
If the indentations puff up during baking, gently press them again while the cookies are still warm.
#### **Step 4: Fill with Lemon Curd**
Let cookies cool for **5 minutes**, then spoon **1/2 teaspoon lemon curd** into each indentation.
Allow cookies to cool completely before serving.
#### **Step 5: Serve & Enjoy**
Optional: Dust with **powdered sugar** or garnish with **lemon zest**.
Store in an airtight container and enjoy!
