Peppermint Texas Sheet Cake Recipe

Ingredients

• 1 cup all-purpose flour
• 1/2 teaspoon baking soda
• 1/2 teaspoon kosher salt
• 1 cup light brown sugar
• 1/4 cup buttermilk
• 1 large egg
• 1 large egg yolk
• 1 teaspoon vanilla extact
• 1/2 teaspoon peppermint extract
• 1/2 cup (1 stick) unsalted butter
• 1/2 cup water
• 1/4 cup Dutch-process cocoa powder
• 1½ teaspoons espresso powder
• 3 tablespoons whole milk
• 6 tablespoons unsalted butter
• 3 tablespoons Dutch-process cocoa powder
• 1½ cups confectioners’ sugar, sifted
• 1/4 teaspoon vanilla extract
• crushed candy canes, for decorating