INGREDIENTS
CAKE
½ cup unsalted butter, cut into 2.5cm pieces, plus more, room temperature, for pan
¾ cup plus 2 Tbsp. sugar, divided, plus more for pan
285g semisweet or bittersweet chocolate (61%–72% cacao), coarsely chopped
2 tablespoon vegetable oil
6 large eggs
2 tablespoon natural unsweetened cocoa powder
1 teaspoon vanilla extract
¾ teaspoon salt
TOPPING
1 cup chilled heavy cream
½ cup mascarpone
3 tablespoon powdered sugar