INGREDIENTS
3
and 3/4 cup all-purpose flour
3 tsp
baking powder
1 tsp
salt
6
large eggs
3/4 cup
Greek yogurt
1/2 cup
buttermilk
2 cups
packed light brown sugar
1 cup
vegetable or canola oil
2 tbsp
Ruby Red grapefruit zest
1/2 cup
freshly squeezed Ruby Red grapefruit juice
1 tbsp
vanilla extract
1 cup
confectioners sugar, sifted
3 tbsp
Ruby Red grapefruit juice
1/4 tsp
vanilla extract