Ingredients
Method
- Beat butter, 3/4 cup sugar and zest until creamy. Beat in egg, juice and vanilla.
- Mix in flour, baking powder and salt. Cover; chill 1 hour.
- Heat oven to 350°F. Line two sheets. Form 24 balls; roll in coating sugar, then powdered sugar.
- Bake 11–12 minutes until cracked and set at the edges. Cool on sheets 5 minutes; transfer to a rack.