Flourless Chocolate Cake

• 6 tablespoons (3/4 stick) unsalted butter, plus more for pan
• 1 1/2 cups semisweet chocolate chips (or 8 ounces coarsely chopped bittersweet chocolate)
• 6 large eggs, yolks and whites separated
• 1/2 cup granulated sugar
• Confectioners sugar, for dusting (optional)

1. Preheat oven to 275F, with rack in center.
2. Butter a 9-inch springform pan.
3. Place butter and chocolate in a large heatproof bowl set over (not in) a saucepan of simmering water; heat until almost melted.
4. Remove from heat; stir until completely melted and combined.
5. Whisk in yolks.
6. In another bowl, beat egg whites to soft peaks with an electric mixer on medium-high speed.
7. Gradually add granulated sugar; beat until peaks are stiff and glossy.
8. Whisk one-fourth of whites into chocolate mixture; gently but thoroughly fold mixture into remaining whites.
9. Spread batter in prepared pan; smooth top.
10. Bake until cake pulls away from sides of pan and is just set in center, 45 to 50 minutes.
11. Cool completely on a wire rack.
12. Serve lightly dusted with confectioners sugar, if desired.

unsalted butter, chocolate chips, eggs, granulated sugar, confectioners sugar

Taken from www.epicurious.com/recipes/food/views/flourless-chocolate-cake-388069 (may not work)