Big Ol Texas Sheet Cake Chocolate Heaven - My Recipe Critic

Ingredients

• 2 cups (250g) all-purpose flour
• 2 cups (400g) granulated sugar
• 1/4 teaspoon salt
• 1/2 cup (approximately 45g) unsweetened cocoa powder
• 1 cup (240ml) water
• 1 cup (2 sticks/227g) unsalted butter
• 1/2 cup (120ml) vegetable oil
• 2 large eggs
• 1/2 cup (120ml) buttermilk
• 1 teaspoon baking soda
• 1 teaspoon vanilla extract
• 1/4 cup (approximately 22g) unsweetened cocoa powder
• 6 tablespoons (90ml) milk
• 4 cups (480g) powdered sugar, sifted
• 1 cup (170g) chopped pecans or walnuts (optional)