INGREDIENTS
3 tbsp
Key lime
1 tsp
Key lime, juice
1 tbsp
Key lime, zest
1
Egg, large
2
Egg whites, large
1 1/2 cups
All-purpose flour
1 tsp
Baking powder
3 1/2 cups
Confectioners' sugar
3
drops Food coloring, green
3/8 tsp
Salt
1 cup
Sugar
1 tsp
Vanilla extract, pure
1/2 tsp
Vanilla extract
1 1/2 cups
Butter, unsalted
1/2 tsp
Milk
1/2 cup
Whole milk