Blackberry Icebox Pie From 'Fruitful'

"[Photograph: Steve Legato] Does the thought of a cool slice of blackberry-flavored whipped cream piled high atop a sweet milk custard entice you? How about pairing both of those elements with a crisp, slightly salty graham cracker crust? And what if it all came together in no time? Well, you'd have icebox pie, courtesy of Fruitful. Why this recipe works: * * Rather than leaving the fruit whole, or coating it in sweet custard, the blackberries are tossed in a minimal amount of sugar, yielding a purée that spreads beautifully throughout the whipped cream, making it the star of the show. * * The simple, homey nature of graham cracker crust is the perfect base for a pie like this, and it holds up very well in the refrigerator (or icebox, if you're a time traveler). * Excerpted from Fruitful by Brian Nicholson and Sarah Huck (Running Press). Copyright © 2014. Photographs by Steve Legato...."