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Keep stirring as the chocolate melts to maintain the right temperature. Once melted and glossy, remove it from the heat and allow it to cool. In a stand mixer, beat some butter until smooth, then sift in powdered sugar and cocoa powder for added richness. A pinch of salt enhances flavor too.
Once the melted chocolate cools, drizzle it into the mixer while on low speed until fully incorporated. A thorough mix results in a luxurious frosting that warrants its own spotlight moment.
Assembling the Cake
After the cakes have cooled, they’re ready for assembly. Use a baking sheet lined with plastic wrap, coated with cooking spray, to flip each cake onto. A quick flip simplifies the cake transfer process. Use a serrated knife to trim off any domed tops for an even stack.