INGREDIENTS
2 sticks
butter
2 cups
sugar
4 larges
eggs
1/3 cup
lime zest
3 cups
flour
1/2 tsp
baking powder
1/2 tsp
baking soda
1 tsp
kosher salt
1/4 cup
key lime juice
3/4 cup
buttermilk
1 tsp
vanilla extract
1/2 cup
key lime juice
1/2 cup
sugar
3 1/2 tbsp
key lime juice
2 cups
confectioners' sugar
1 serving
adapted from smitten kitchen