Gooey Chocolate Crater Cake

Ingredients

• 3 cups all-purpose flour
• 2 cups granulated sugar
• 6 tablespoons unsweetened cocoa powder
• 2 teaspoons baking powder
• 1 teaspoon salt
• 2 cups cold water
• ¾ cup vegetable oil
• 2 tablespoons white vinegar
• 2 teaspoons vanilla extract
• 8 ounces softened cream cheese
• 1 stick butter, room temperature
• 2 cups confectioners’ sugar, sifted
• 1 tsp vanilla extract
• ¼ cup plus 1½ tsp unsweetened dutch-process cocoa powder
• ¼ cup plus 1½ tsp boiling water
• 1¼ sticks (5 ounces) unsalted butter, room temperature
• ¼ cup plus 2 Tb confectioners’ sugar, sifted
• pinch of salt
• 12 ounces quality semi-sweet chocolate, melted and cooled