German Chocolate Sheet Cake Recipe | King Arthur Baking

Ingredients

• 1 1/4 cups (283g) water, boiling
• 3/4 cup (78g) Dutch-process cocoa
• 2 cups (397g) granulated sugar
• 2 cups (240g) King Arthur Unbleached All-Purpose Flour
• 2 tablespoons Instant Clearjel or cornstarch
• 2 teaspoons baking powder
• 1 teaspoon table salt
• 3/4 cup (149g) vegetable oil
• 4 large eggs, at room temperature
• 2 teaspoons King Arthur Pure Vanilla Extract
• 1 cup (213g) light brown sugar, packed
• 1 tablespoon plus 2 teaspoons Instant Clearjel or cornstarch
• 1/4 teaspoon table salt
• 5 tablespoons (71g) butter
• 3/4 cup (170g) half-and-half or milk
• 2 tablespoons (39g) light corn syrup or dark corn syrup
• 1 teaspoon King Arthur Pure Vanilla Extract
• 1/8 teaspoon pecan, butter-rum, or vanilla-butternut flavor, optional
• 1 1/2 cups (128g) toasted coconut
• 1 1/2 cups (170g) pecans, toasted and chopped