Molten chocolate cake

From: Thejoyofbaking.com...

1/2 cup (113 grams) unsalted butter, cut into pieces

6 ounces (170 grams )semi-sweet or bittersweet chocolate, finely chopped

3 large eggs, separated

1/3 cup (65 grams) granulated white sugar

1 teaspoon pure vanilla extract

1/8 teaspoon cream of tartar

1 tablespoon granulated white sugar

Molten Chocolate Cakes:Preheat oven to 400 degrees F (200 degrees C) and place rack in center of oven. Generously butter four - 6 to 8 ounce (180-240 ml) molds, ramekins, or custard cups and dust the insides with granulated white sugar. Place the prepared molds on a baking sheet and set aside while you make the cake batter.

In a heatproof bowl, placed over a saucepan of simmering water, melt the butter and chocolate. Remove from heat and set aside while you beat the egg yolks.

In the bowl of your electric mixer, or with a hand mixer, beat the egg yolks and 1/3 cup (65 grams) sugar untilthick, pale, and fluffy. (When you slowly raise the beaters the batter will fall back into the bowl in slow ribbons.) Beat in the vanilla extract and then fold in the melted chocolate mixture.

In another clean bowl whip the egg whites until frothy. Add the cream of tartar and continue to whip until soft peaks form. Gradually add the 1 tablespoon of granulated white sugar and whip just until stiff peaks form. With a rubber spatula or wire whisk gently fold the beaten whites into the chocolate mixture, just until incorporated. Do not over mix or the batter will deflate. Divide the batter between the prepared molds. Bake for 10 to15 minutesor until the outside edges of the cakes are set but the middle still looks a little wet and wobbly. You may have cracks on the top surface of the cakes.

Immediately remove from oven and let them rest for a minute or two. You can serve the cakes in their molds or you can run a palette or sharp knife around the edge of each cake and then invert onto the center of each serving plate. Carefully remove the mold. Sprinkle the top of each cake with confectioners sugar and place a dollop of softly whipped cream, clotted cream, creme fraiche, or vanilla ice cream on top of each warm cake. 

Note: You can prepare the chocolate mixture several hours ahead of time. Simply make the recipe, pour into the prepared molds, cover with plastic wrap, and refrigerate.  Bake just before serving. When the batter is cold the cakes may take a minute or two longer to bake.

Makes four Molten Chocolate Cakes.

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