Key Lime Cookies

• 1/2 cup butter
• 1 cup white sugar
• 1 egg
• 1 egg yolk
• 1 1/2 cups all-purpose flour
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1/4 cup fresh lime juice
• 1 1/2 teaspoons grated lime zest
• 1/2 cup confectioners' sugar for decoration

Preheat oven to 350 degrees F (175 degrees C). Grease cookie sheets.

In a large bowl, cream butter, sugar, egg, and egg yolk until smooth. Stir in lime juice and lime zest. Combine the flour, baking powder, and salt; blend into the creamed mixture. Form dough into 1/2 inch balls, and arrange on the prepared cookie sheet.

Bake 8 to 10 minutes in the preheated oven, or until lightly browned. Cool on wire racks. Sift confectioners' sugar over cookies while still warm.