Homemade Twinkies Recipe 3 | Say Mmm

Ingredients

• Nonstick cooking spray
• 1/2 cup cake flour
• 1/4 cup all-purpose flour
• 1 teaspoon baking powder
• 1/4 teaspoon salt
• 2 tablespoons whole milk
• 4 tablespoons unsalted butter
• 1/2 teaspoon vanilla extract
• 5 large eggs, at room temperature, separated
• 3/4 cup granulated sugar
• 1/4 teaspoon cream of tartar
• 1/4 cup shortening
• 1/4 cup margarine
• 1 cup powdered sugar
• 1 teaspoon vanilla extract