Chocolate Fudge Cake

Preheat oven to 350° with the oven rack in the middle. Spray two9" round cake pans with cook­ing spray and line the bottoms with parchmentpaper. For the cake: In a small saucepan over medium heat, combine butter and 1 cup waterand heat until the butter is melted. In a medium bowl, whisk together the eggs, sour cream and vanilla. In a large bowl (or the bowl of a stand mixer), whisk together flour, granulated sugar, brown sugar, cocoa powder, baking soda, baking powder and salt. Add the butter mixture and use an electric mixer on low speed to mixuntil just combined. On medium speed, mix in the sour cream mixture.Dividing evenly, scrape the batter into the prepared pans. Bake for 30to 35 minutes, until a toothpick inserted into the center of the cakes comesout with a few moist crumbs attached. Place the pans on a wire cooling rack andlet cool for 25 minutes. Run a paring knife around the edge of each cake toloosen it from the pan, then invert the cakes onto the rack, remove theparchment, and let cool completely.Make the frosting: Put the chocolate chips in a medium bowl. In a smallsaucepan over medium heat, heat the cream until hot. Pour cream over chocolate and let stand for 1 minute. Now gently whisk until creamy andsmooth. Scoop out 3/4 cup of the chocolate mixture into another bowl and setaside the remaining frosting for now. Let the 3/4 cup of the mixture cool,stirring occasionally, for about 1 hour, or until it’s spreadable, creamy, andholds its shape. Place one cake on a serving plate, bottom side up. Spread the top with frosting in an even layer all the way to the edge, then top with the other cake,bottom side up. Gently reheat the remaining frosting by filling a medium saucepan with2 inches of water and placing over medium heat. Let come to a low simmer. Placethe bowl of frosting over the water (the bottom of the bowl should not touchthe water). Stir until it is melted and pourable. Immediately pour the frostingover the top of the cake. With a metal spatula, quickly spread it to evenlycover the top and let the frosting drip down the sides. Once the frosting isset, slice and serve.