Hot Cocoa 3 Muskateers Cupcakes from The Domestic Rebel. Hayley says: These cupcakes are insanely chocolatey, perfect for you cocoa lovers out there. The fudgy cupcakes are light and fluffy, and the rich + sweet marshmallowy chocolate frosting is absolutely decadent. I like the mallow bits inside the cake because they get super caramelized and gooey, almost taking on a toasty quality. Not to mention, these cupcakes are just too cute.