INGREDIENTS
1 stick
plus 2 tablespoons (5 oz, 140 g) unsalted butter, room temperature
1 1/2 cups
(6 oz, 170 g) confectioner's sugar
grated zest of 1 large lemon
1 tbsp
lemon juice
1 tsp
lemon extract
1
large egg, room temperature
1/4 tsp
table salt
1/4 tsp
baking soda
1 cup
(5 oz, 140g) all purpose flour