Key Lime Cookies

1 1/2 cups all-purpose flour
1 teaspoon baking powder
1 teaspoon salt
1/2 cup butter
1 cup granulated sugar
1 large egg plus1 large egg yolk
1/4 cup fresh lime juice
1 1/2 teaspoons grated lime peel
Powdered sugar for sprinkling
Preheat oven to 350*F (175*C). Lightly grease baking sheets.
In medium bowl combine flour, baking powder and salt; set aside.
In a large bowl, cream butter and sugar until fluffy. Add egg and egg yolk, beating until light and creamy. Beat in lime juice and peel until well mixed. Stir in the flour mixture until just mixed.
Form dough into 1/2 inch balls. Place on prepared cookie sheet and bake until lightly browned, about 8 to 10 minutes. Transfer to wire rack. While still warm, sift powdered sugar over cookies. Cool completely and store in an airtight container.
Makes 3 dozen cookies.