These buttery thumbprint cookies are filled with lemon curd and packed with chopped pecans. No chilling required, and you can finish them with powdered sugar or a simple glaze.
Preheat the Oven: Set your oven to 350°F (180°C) and line a baking sheet with parchment or a silicone mat.
Prepare the Dry Ingredients: Place 1 cup all-purpose flour, ⅔ cup pecans, toasted and chopped, and ⅛ teaspoon salt into a medium bowl and set aside.
Cream the Butter and Sugar: Use an electric mixer to combine ½ cup unsalted butter and ⅓ cup granulated sugar beating until light-colored and fluffy.
Add Egg Yolk and Vanilla: Add 1 egg yolk and ¾ teaspoon vanilla extract, mixing well.
Combine Wet and Dry: Add the dry ingredients to the butter mixture and mix just until the dough comes together with no dry patches.
Shape the Cookies: Scoop 1-tablespoon portions, roll into balls, and place on the prepared baking sheet. Chill briefly if sticky.
Start Baking and Make Indentations: Bake for 2–3 minutes, then remove and quickly press a crater into the center of each cookie using your finger, cork, or spoon handle.
Finish Baking: Return to oven for 8–9 minutes. Repress the center if needed.
Fill and Bake Again: Add about ½ teaspoon lemon curd to each indentation and return to the oven for 8–10 more minutes until lightly golden.
Cool and Decorate:Let cookies cool completely on a wire rack before dusting with powdered sugar or adding icing.
Notes
Powdered Sugar Frosting: Combine 1/2 cup of powdered sugar or confectioners' sugar with 1-2 teaspoons of milk. Stir together. Drizzle with a spoon or pour the icing into a small zippered plastic bag. Cut a small hole by snipping one corner of the bag. Squeeze the icing over the top of each cookie in any pattern you like.Storage and Freezing: Store cookies in an airtight container at room temperature for up to 2 days. For longer storage, freeze the fully baked and cooled cookies in a single layer until firm, then transfer to a sealed container. Thaw at room temperature and dust with fresh powdered sugar before serving, if needed.