Decadent Warm Chocolate Bliss Cake

Ingredients

• 4 egg whites, at room temperature
• 1/2 teaspoon fine sea salt
• 2 teaspoons vanilla extract
• 1/2 cup boiling water
• 1 1/4 cups granulated sugar
• 4 ounces bittersweet chocolate, chopped
• 2 egg yolks
• 1/2 cup unsweetened cocoa powder
• 1/2 cup fine blanched almond flour
• 2 tablespoons softened butter