Whoopie Pie

Ingredients

• 3 cups sugar
• 1 cup organic butter
• 3 cups organic milk
• 4 eggs
• 1/2 cup vegetable oil
• 1 tablespoon vanilla extract
• 6 cups all-purpose flour
• 2 cups unsweetened cocoa powder
• 1 teaspoon baking powder
• 1 1/2 tablespoons baking soda
• 1 teaspoon salt
• 1 1/2 cups shortening
• 3 cups confectioners’ sugar
• 1 1/3 cups marshmallow topping
• Dash salt
• 1 teaspoon vanilla extract
• 1/3 to 1/2 cup milk