12 tablespoons (1 1/2 sticks) unsalted butter (room temperature)
1/3 cup powdered sugar
2 limes (zest)
2 tablespoons lime juice
1 tablespoon vanilla extract
1 3/4 cups + 2 tablespoons flour
2 tablespoons corn starch
1/4 teaspoon salt
2/3 cup powdered sugar
Cream the butter with the powdered sugar.
Beat in the lime zest, lime juice and vanilla.
Mix the flour, cornstarch and salt in a large bowl.
Beat the dry ingredients into the wet.
Roll the dough out into a 1 1/4 inch log.
Wrap in plastic and let chill in the fridge for at least an hour.
Slice the dough into 1/4 in thick slices and place them on a baking sheet, 1 inch apart from each other.
Bake in a preheated 350F/180C oven until just lightly golden brown, about 12-15 minutes.
Let cool on a wire rack for 4 minutes.
Dredge cookies in powdered sugar to coat.