This icebox cake has the spirit of a Key lime pie and can be layered up in 10 minutes (if you’re not too precious about lining things neatly), then sent to the refrigerator to meld into a glorious tart-sweet-creamy-cakey pudding. But it has a salty secret: its structure comes from Ritz crackers.
A recipe this slapdash is a bit unusual coming from J. Kenji López-Alt, Serious Eats’ Food Lab columnist-wizard who famously published a 21-ingredient meatloaf recipe, including gelatin, Marmite, anchovies, and soy sauce. But smart kitchen hacks are smart kitchen hacks. This one comes by way of his wife, Adriana, who learned it from her aunt Gloria in Colombia, though there they use Ducales, a local buttery cracker, instead.
This is not the first time we’ve seen Ritz tiptoe into a dessert—the original Mock Apple Pie, a Depression-era invention, was crackers masquerading as apple slices when the fruit was unavailable or too expensive. But it does serve as a good excuse for a PSA: (almost) anything can be an icebox cake. You can use any dry, crunchy cookie-like thing, store-bought or homemade. Excellent contenders include crispy chocolate chip cookies like Tate’s, graham crackers, brown-sugary Biscoff cookies, and now (insert your favorite salty cracker here). Recipe adapted slightly from Genius Desserts (Ten Speed Press, September 2018). —Genius Recipes
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J. Kenji López-Alt’s Ten-Minute Lime Cracker Pie
12 hours 10 minutes
8 to 10
(14-ounce/396ml) cans sweetened condensed milk
(470g) heavy cream
finely grated lime zest, plus more for serving
(120g) freshly squeezed lime juice (from about 8 limes)
(285g) Ritz crackers (85 crackers, from about 3 sleeves)
Whisk together the condensed milk and heavy cream in a large bowl until combined. Add the lime zest and juice and whisk until thickened, about 1 minute.
Spread 1 cup (240ml) of the condensed milk mixture on the bottom of a deep-dish pie plate, an 11-inch (28cm) oval casserole, or a similar large shallow dish. Top with a single layer of Ritz crackers. Repeat, alternating layers of filling and crackers, until the dish is full, finishing with a layer of filling. Cover and refrigerate for at least 2 hours or overnight—the longer you wait, the more the crackers will soften and meld with the filling. Serve cold, zesting more fresh lime over the top, if you like.
Genius recipes surprise us and make us rethink cooking tropes. They're handed down by luminaries of the food world and become their legacy. They get us talking and change the way we cook. And, once we've folded them into our repertoires, they make us feel pretty genius too. Watch for new Genius Recipes every Wednesday morning on our blog, dug up by Food52's Senior Editor Kristen Miglore.