These lemon curd cookies are a soft and tender butter cookie that's filled with a bright and tangy lemon curd. There's even a dusting of powdered sugar sprinkled over the top!
In a small saucepan over medium-low heat, whisk together the egg yolks, sugar, lemon juice, lemon zest, and salt.
Whisk constantly as the lemon curd cooks to avoid any curdling. It will take about 20-25 minutes to thicken. Once thick, remove from the heat and mix in the cubed butter until completely combined.
Scrape the curd into a heat-safe bowl, cover with plastic wrap, and place in the refrigerator to cool completely.
Lemon Butter Cookies
In a medium mixing bowl, whisk together the flour, corn starch, and salt. Set aside.
In the bowl of a stand mixer using the paddle attachment, beat the butter and sugar on high speed until light and creamy (2-3 minutes). Add the egg, vanilla extract, and lemon zest and mix on medium speed until combined.
Reduce the speed to low and add the flour mixture, mixing just until combined. Remove the bowl from the stand and use a silicone spatula to fold in any loose flour.
Line two baking sheets with parchment paper. Use a small cookie scoop (I used my #50, which is about 1 tablespoon) to scoop out the dough and roll into balls in your hands. Place onto the prepared baking sheets.
Use the back of a ½ teaspoon measuring spoon to press into each dough ball to make an indent. Place both baking sheets in the refrigerator to chill for at least 40 minutes.
Preheat the oven to 350 degrees. Once chilled, bake one cookie sheet at a time for 9-11 minutes, or just until the edges are set. If needed, use the ½ teaspoon measuring spoon to press softly into each cookie to make the indent more obvious.
Allow the cookies to cool on the baking sheet for 10 minutes before transferring them over to a wire rack to finish cooling.
Once cooled, dust each cookie with powdered sugar (optional) and add about 1 teaspoon of lemon curd to the middle. I placed my curd in a piping bag and piped it onto the cookie.
Keep any leftover cookies in an airtight container in the refrigerator for up to 5 days.
Notes:
Lemon Curd: If desired, you can definitely make this the day before. The curd must be completely chilled before filling the cookies.Measuring Flour: To help ensure you don’t add extra flour, follow these three simple steps: 1) Fluff up the flour using a fork. 2) Spoon the flour into your measuring cup. 3) Scrape a knife across the top of the measuring cup to level out the flour.Cookie Scoop: I used a 1 tablespoon cookie scoop in order create smaller cookies. I recommend the #50 cookie scoop for this recipe.Cookie Dough: Use a ½ teaspoon measuring spoon to make an indent into each cookie dough ball. I do this before baking and then after.Chill Time: The cookie dough balls must chill 40 minutes before baking. This allows the butter to firm back up and to not overspread while baking.