INGREDIENTS
1 cup
granulated sugar
1 cup
powdered sugar
2 cups
vegetable shortening
3/4 tsp
vanilla
1 large
egg
4 1/3 cups
cake flour
3/4 tsp
baking soda
3/4 tsp
baking powder
1/4 tsp
salt
3 tsp
orange zest
1 cup
unsalted butter
7 cups
confectioners' sugar
1/2 cup
milk
2 tsp
vanilla extract