Lemon Curd Cookies

Ingredients: ¼ pound (1 stick) unsalted butter, room temperature,½ cup sugar,1 egg yolk,1 teaspoon pure vanilla extract,1¼ cups all-purpose flour,¼ teaspoon salt,Lemon Curd
Instructions:

1. In the bowl of an electric mixer beat together butter and sugar on medium speed until light and fluffy, about 3 minutes.
2. Add egg yolk and vanilla; beat well.
3. Whisk together flour and salt, and add to mixture, beating on low until combined.
4. Chill dough for at least 1 hour.
5. Preheat oven to 350 degrees.
6. Form dough into 1-inch balls.
7. Place balls on parchment-lined baking sheet.
8. Make a deep indentation in the center of each ball with your thumb. I use a cork, it the perfect for uniform circles. Take care not to press down too hard or the cookie will break apart.
9. Using a piping bag, fill center of each cookie with lemon curd.
10. Bake for 10-12 minutes.
11. Remove from oven, and place on a wire rack to cool.

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