INGREDIENTS
2 tbsp
unsalted butter
1/3 cup
all-purpose flour
1/2 tsp
baking powder
1/4 tsp
table salt
3
large eggs, separated
3/4 cup
granulated sugar
1 tsp
finely grated lemon zest
1/3 cup
fresh lemon juice
1 1/4 cups
whole milk
confectioners' sugar for serving