INGREDIENTS
3/4 cup
unsalted butter, room temperature
1 cup
confectioners' (powdered sugar, divided use)
Finely grated zest of 2 limes
2 tbsp
fresh lime juice
1 tbsp
pure vanilla extract
1 3/4 cups
plus 2 tablespoons all-purpose flour
2 tbsp
cornstarch
1/4 tsp
coarse salt