Chocolate Soufflé Cake | Savory

Ingredients

• Cooking spray
• 2 tsp unsweetened cocoa powder, plus more for dusting
• 2 (4 oz) bittersweet chocolate baking bars, chopped
• 3/4 cup (1 1/2 sticks) unsalted butter, cut into 1/2-inch pieces
• 6 large egg yolks
• 3/4 cup packed dark brown sugar
• 2 tsp vanilla extract
• 1/2 tsp salt
• 3 large egg whites
• 4 tsp granulated sugar
• Whipped cream, to serve (optional)