Decadent Flourless Chocolate Cake Recipe: So Easy!

Ingredients

• 225g (8 ounces) dark chocolate (70% cocoa or higher), finely chopped
• 115g (1/2 cup or 1 stick) unsalted butter, cut into cubes
• 1/4 cup (50g) granulated sugar
• 1/4 cup (50g) packed light brown sugar
• 1 teaspoon pure vanilla extract
• 1/4 teaspoon kosher salt
• 4 large eggs, separated, room temperature
• 1/4 teaspoon cream of tartar
• Powdered sugar (icing sugar) for dusting (optional)