INGREDIENTS
1 cup
butter, softened
1 cup
vegetable oil
1 cup
sugar
1 cup
powdered sugar
1 tbsp
vanilla
2
eggs
4 1/2 cups
flour
1/2 tsp
salt
1 tsp
cream of tartar
1 tsp
baking soda
buttercream icing:
1 cup
butter, softened
5 cups
powdered sugar
1/4
milk