INGREDIENTS
2 cups
all-purpose flour
1 cup
white whole wheat flour
1 1/2 tsp
baking powder
1/2 tsp
baking soda
1/2 tsp
salt
1/4 cup
butter, softened
2/3 cup
sugar
2
eggs
1 tsp
vanilla extract
3/4 cup
plain yogurt
1 cup
milk (dairy, soy or almond)
1/4 cup
fresh grapefruit juice
1 tbsp
fresh grapefruit zest
3/4 cup
all-purpose flour
1/3 cup
sugar
1/4 cup
butter, melted
2 tsp
fresh grapefruit juice
1/2 cup
confectioner's sugar
1 tbsp
fresh grapefruit juice
1 tbsp
half and half or milk
grapefruit zest, optional