Icebox cake is the best cake, period. Don't even with your red velvet and your Funfetti. Icebox cake for-ev-er. When I tried Rouge Tomate 's gorgeous, simple, perfect take on the dessert, my first reaction was the usual garbled stream of ecstatic mumbling. You know, that first-taste-of-icebox-cake sound. It was the cool, chocolate-and-cream magic I'd know anywhere. Imagine my complete surprise when, after licking the plate clean, I found out this particular recipe was vegan and gluten-free.