INGREDIENTS For the brownie base 8 ounces (226 g) Nutella 1/2 cup (113 g) unsalted butter, cut into pieces 3/4 cup (150 g) granulated sugar 3 large eggs, room temperature 1 tablespoon pure vanilla extract 1 cup (130 g) all-purpose flour 3 tablespoons Dutch-process cocoa powder 1/2 teaspoon salt