INGREDIENTS
1 cup
butter (softened)
1 cup
vegetable or canola oil
1 cup
granulated sugar
1 cup
powdered sugar
2
large eggs
2 tsp
vanilla
zest of 1 lemon
4 1/2 cups
all-purpose flour
1 tsp
baking soda
1 tsp
cream of tartar
zest of 2 lemons
juice of 2 lemons (or about 1/2 cup lemon juice)
4 tbsp
butter (melted)
4 cups
powdered sugar