Key Lime Cookies

Cookie dough

• 1 3/4 cups all-purpose flour
• 1/2 teaspoon baking powder
• 1/4 teaspoon baking soda
• 3/4 cup butter, softened
• 1/2 cup icing sugar
• 1 egg yolk
• 1 1/2 teaspoons grated key lime rind
• 4 teaspoons key lime juice

Sugar Coating

• 1/4 cup granulated sugar
• 1/2 teaspoon grated key lime zest (scant 1/2 tsp (2ml)

Directions

1. 1

   Sugar Coating: In small bowl of food processor, whirl sugar and lime rind until sugar is fine. Transfer to bowl; cover and let stand for at least 2 hours or overnight. (If sugar clumps, break up into powder.).

2. 2

   Whisk together flour, baking powder and baking soda; set aside.

3. 3

   Beat butter and icing sugar until light and fluffy; beat in yolk, lime rind and juice. Gradually stir in flour mixture.

4. 4

   Transfer dough to pastry bag fitted with 1/2-inch/ 1 cm star tip (or plastic bag with corner cut out). Pipe out 1-1/2-inch/4 cm long cookies onto parchment paper–lined baking sheet.

5. 5

   Bake in 300°F/150°C oven until edges and ridges are just starting to turn golden, 25 to 30 minutes.

6. 6

   Important -

7. 7

   Roll in lime sugar while still warm; let cool on rack.

8. 8

   Makes about 3 dozen cookies.