Red Velvet Sheet Cake with Classic Red Velvet Frosting Recipe | Food Network UK

Ingredients

• For the sheet Cake
• Nonstick baking spray
• 2½ cups cake flour
• 1 tsp salt
• 1 cup buttermilk
• 1 tsp vanilla extract
• 1 tsp baking soda
• 2 whole eggs
• 1½ tsps vinegar
• 1½ tsps cocoa powder
• 1½ fluid ounces red food coloring
• 1 cup shortening
• 1¾ cup granulated sugar
• For the classic red velvet frosting
• 1 cup whole milk
• 5 tbsps plain flour
• 225g unsalted butter
• 1 cup granulated sugar