Red Velvet Whoopie Pies Recipe | Epicurious

Ingredients

• 2 cups all-purpose flour
• 3 tablespoons unsweetened (natural) cocoa powder (not Dutch process)
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 stick (1/4 cup) unsalted butter, softened
• 1/4 cup vegetable oil
• 1 cup sugar
• 1 large egg
• 1 teaspoon vanilla
• 1 teaspoon distilled white vinegar
• 2/3 cup well-shaken buttermilk
• 1 (1-ounce) bottle red food coloring (2 tablespoons)
• 8 ounces cream cheese, softened
• 1 teaspoon fresh lemon juice
• 1/2 teaspoon vanilla
• 1/8 teaspoon salt
• 2 cups confectioners' sugar