the best chocolate frosting i've ever had

I am not exaggerating that this is the best chocolate frosting that I have ever had. Thanks to Jenn Fox for introducing me to this frosting and providing her recipe. She even told me that it has been used to woo men. I'm so not surprised.

Chocolate Buttercream Frosting

3 ounces unsweetened chocolate, melted

2 ½ cups powdered sugar

1 ½ tablespoons unsweetened Dutch-process cocoa powder

1 ½ cups or 3 sticks unsalted butter, at room temperature

1 teaspoon vanilla extract

½ cup heavy whipping cream, at room temperature

Sift the powdered sugar and cocoa powder into a large bowl. Add the butter and using an electric mixer on low speed beat until smoothly blended, about 2 minutes. Add the unsweetened melted chocolate, vanilla and heavy cream, mixing to incorporate. On medium speed, beat the frosting for at least 3 minutes, until it looks smooth and creamy and the color lightens. Once the cupcakes are frosted they can be left for up to three days at room temperature or stored in the refrigerator. Makes enough frosting for one box cake or cupcakes.