Key Lime Thumbprints

Total Time: 1 hr 15 mins Preparation Time: 15 mins Cook Time: 1 hr

Ingredients

• 1 cup unsalted butter, softened
• 1/2 cup sugar
• 2 large egg yolks, room temperature
• 1 teaspoon vanilla extract
• 2 1/2 cups all-purpose flour
• 1 teaspoon coarse salt
• 1 cup sugar
• 3 tablespoons all-purpose flour
• 3 large eggs, room temperature
• 1 tablespoon key lime zest, finely grated
• 3 tablespoons fresh key lime juice
• 1/4 teaspoon coarse salt
• confectioners' sugar, for dusting

Recipe

• 1 make the dough: cream butter and sugar with a mixer until pale and fluffy. add yolks and vanilla, and beat for 1 minute. reduce speed to low, and beat in flour and salt until combined. cover, and refrigerate until firm, about 1 hour (or up to 1 day).
• 2 preheat oven to 325 degrees.
• 3 make the filling: whisk sugar, flour and eggs in a medium bowl. stir in lime zest, juice and salt.
• 4 roll balls of dough using 2 teaspoons dough for each. place 1 inch apart on parchment lined baking sheets. with the handle of a wooden spoon, press gently in the center of each to creat an indentation.
• 5 bake for 10 minutes. press centers if indentation loses definition.
• 6 spoon filling into centers. bake until cookies are light brown around edges, 6-8 minutes.
• 7 let cool on wire racks.
• 8 cookies will keep, covered, for up to 2 days.
• 9 just before serving dust with confectioner's sugar.