Chocolate Texas Sheet Cake

Bahan-bahan (24 porsi)

• 1 cup salted butter (2 sticks)
• 1 cup water
• 3/4 cup unsweetened cocoa powder
• 1/4 cup vegetable oil
• 1 cup brown sugar
• 1 cup granulated sugar
• 2 teaspoons vanilla extract
• 2 cups all purpose flour (spooned and leveled)
• 3/4 teaspoon kosher salt
• 1 teaspoon baking soda
• 3/4 cup sour cream
• 2 large eggs
• 3/4 cup salted butter (1 and 1/2 sticks)
• 1/2 cup unsweetened cocoa powder (mounded)
• 1/2 cup sour cream
• 2 teaspoons vanilla extract
• 3 & 1/2 cups powdered sugar (divided)
• 1/4 teaspoon kosher salt