Lime Flowers

Sift together flour, baking powder, and salt into a large bowl; set aside.

Put granulated sugar and lime zest in the bowl of an electric mixer fitted with the paddle attachment. Mix on medium speed 1 minute. Add butter, and mix until fluffy, about 2 minutes. Mix in vanilla and lime juice. Reduce speed to low, and gradually mix in flour mixture.

On a lightly floured work surface, halve the dough. Flatten each half into a 10-inch disk, and wrap each in plastic. Freeze until firm, about 30 minutes.

Preheat oven to 325 degrees. Working with 1 half at a time, roll out dough on parchment paper to 1/8 inch thick. Cut shapes from dough with a 3-inch flower-shape cookie cutter. Space 1 inch apart on baking sheets lined with parchment paper. Cut a hole in center of each with a 1-inch round cutter. Repeat with remaining disk. Wrap scraps in plastic. Freeze 30 minutes; reroll, and cut.

Bake cookies, rotating sheets halfway through, until set, 12 to 13 minutes. Let cool on a wire rack. Before serving, sift confectioners' sugar over cookies.