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Dessert · American

Cassata Slab Cake

This sheetcake version of Italian cassata houses a booze-soaked spongecake and sweet ricotta under a blanket of green marzipan dotted with candied fruit...

Total
3 hr
Serves
12

I remember the first time I tasted a cassata slab cake. It was at my friend Maria's house during one of her famous Sunday family lunches. Maria is Italian-American, and Sundays at her place are like stepping into a world where tradition and modern life mingle around the dining table. There were always plenty of laughs, stories, and, of course, food. The highlight of that particular afternoon was the unveiling of this beautiful cake.

I was immediately drawn to its vibrant colors, with candied fruits peeking through the layer of green marzipan. As soon as I took a bite, I knew I needed to learn how to make it myself. That combination of sweet ricotta, the subtle kick from the booze-soaked sponge, and the almond flavor from the marzipan stayed with me long after the lunch ended. The memory of that Sunday has become a bit of a tradition in my own home. Every spring, when the days start getting longer and the promise of warm weather is in the air, I find myself craving this treat.

Easter seems the perfect occasion to bring out a cassata slab cake because it is as much a visual feast as a treat for the palate. I love seeing the surprise and delight on my friends’ and family’s faces when I bring it to the table. It’s a showstopper for sure, but it’s also a deeply comforting dessert that brings people together. Whether served after a big family dinner or at a springtime potluck, it never fails to spark conversation and admiration. The magic of this cake lies in its ingredients and how they come together.

The eggs, sugar, and vanilla combine to create a light and airy sponge that's the backbone of the cake. It's important to use room temperature eggs since they whip better and give more volume, which is crucial for the sponge. The sponge cake's texture is delicate yet sturdy enough to soak up the booze mixture, usually a splash of rum or marsala wine, adding warmth and depth. The sweet ricotta filling is rich and creamy, offering a contrast to the tender cake layers. Ricotta is a bit of a star here.

When sweetened just right, it provides an unexpected twist that most people find pleasantly surprising. The green marzipan on top does more than just catch the eye. It's a sweet, nutty cover that seals in the flavors of the cake, while the scattered bits of candied fruit add both color and bursts of sweetness. This delicate balance of flavors and textures is what makes the cassata slab cake a memorable dessert. The marzipan's almond flavor pairs incredibly well with the ricotta's creaminess, and together, they create a harmonious and sophisticated taste that's quite different from your typical sheet cake.

Not to mention, the marzipan’s pliability makes it easy to roll out and lay over the cake, giving it a smooth and appealing finish. Making this cake isn't overly complicated, but there are a few tips that can help ensure it turns out as delightful as possible. First, make sure to line your baking pan well with parchment after greasing it with nonstick spray.

This ensures your cake comes out easily without sticking. When you're mixing the batter, be careful not to overmix once you add the flour. Overmixing can result in a dense cake, and we want that lovely light texture. As for the booze soaking, allow the sponge to cool slightly before you spoon the mixture over it. This not only helps the cake absorb the liquid better but prevents any residual heat from evaporating the alcohol's flavor.

Lastly, if you're a fan of a smoother ricotta filling, you might want to push it through a fine sieve before mixing it with sugar. This step isn't necessary, but it can give the filling an extra creamy consistency. As for the marzipan, a little cornstarch dusted on your rolling pin and surface can prevent sticking as you roll it out. These little tricks make the process smoother and the final result even more satisfying. The origins of the cassata cake go back to Sicily, where it was traditionally made to celebrate Easter and other festive occasions.

It’s believed that the word 'cassata' comes from the Arabic 'qas’ah', referring to a bowl used to shape the cake. Over time, this dish has evolved, with each layer and ingredient reflecting Sicily's diverse cultural influences. While the traditional round cassata is more common, adapting it into a slab cake makes it more accessible for casual gatherings and easier to serve. In the American culinary scene, the cassata cake has been embraced and adapted by many Italian-American families, becoming a beloved dessert at celebratory meals. It’s a testament to how food can keep cultural roots alive while also adapting to new settings.

I love that this cake feels like a piece of history on the table, showing how flavors and stories from different places can come together so beautifully in our kitchens. Whenever I make it, I feel like I'm sharing a little piece of my friend Maria’s heritage, a tradition of joy and togetherness that has found a place in my heart too.

Recipe

Cassata Slab Cake

Total
3 hr
Serves
12

Ingredients

12 Servings

Method

  1. Step 1: Place a rack in middle of oven; preheat to 350°. Lightly coat a 13x9" metal baking pan with nonstick vegetable oil spray; line with 2 sheets of parchment, leaving overhang on all sides. (Do not spray parchment.) Beat 4 large eggs, room temperature, 2 cups (400 g) granulated sugar, 1 Tbsp. vanilla extract, and 1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt in the bowl of a stand mixer fitted with the whisk attachment on medium-high speed until pale, fluffy, and nearly tripled in volume, 7–10 minutes (mixture will fall off whisk in an unbroken ribbon when lifted from the bowl). Reduce speed to low and, with the motor running, add 2 tsp. baking powder; mix, scraping down sides of bowl halfway through, until combined, about 1 minute. Add 2 cups (250 g) all-purpose flour and mix until combined, about 1 minute (batter will be very thick); scrape down sides and bottom of bowl.

  2. Step 2: Meanwhile, heat 1 cup whole milk and ¾ cup vegetable oil in a small saucepan over medium, stirring occasionally with a heatproof rubber spatula, until steaming (there should be no bubbling), about 4 minutes.

  3. Step 3: Pour over batter, scraping saucepan to get every bit. Beat on low speed until batter is smooth, about 2 minutes. Scrape down bowl and fold gently once or twice to ensure batter is well combined (it will be runny). Scrape into prepared pan.

  4. Step 4: Bake cake until golden brown and top springs back when gently pressed, 40–45 minutes. Transfer pan to a wire rack and let cake cool. (It will shrink a little bit.) Run an offset spatula around sides of cake to loosen, Then invert out onto rack. Peel away parchment and discard. Set pan aside; no need to wash it. Do Ahead: Cake can be baked 1 day ahead. Store tightly wrapped at room temperature.

  5. Step 5: Mix zest and juice of 1 small orange, zest and juice of 1 medium lemon, 2½ cups whole-milk fresh ricotta, ¾ cup mini semisweet or bittersweet chocolate chips, ¾ cup (83 g) powdered sugar, 2 tsp. vanilla extract, and ½ tsp. Diamond Crystal or ¼ tsp. Morton kosher salt in a small bowl until sugar is dissolved. Cover filling and chill until ready to use. Do Ahead: Filling can be made 1 day ahead. Keep chilled.

  6. Step 6: When ready to assemble cake, heat juice of 1 medium lemon, ¾ cup off-dry or sweet Marsala, ½ cup (100 g) granulated sugar, 1 tsp. vanilla extract, and a pinch of kosher salt in a small saucepan over high, stirring occasionally, until sugar is dissolved. Let Marsala soak cool.

  7. Step 7: Holding a long serrated knife parallel to cutting board, split cake in half horizontally. Place bottom half, cut side up, in reserved pan. (The cake can break somewhat easily. But don’t fret; you can piece it back together in the pan if needed. You can also place halves on sheets of parchment paper to help you slide them into the pan without breaking.) Brush half of Marsala soak over cake. Dollop filling over; spread into an even layer. Place remaining cake, cut side up, on top. Brush with remaining Marsala soak.

  8. Step 8: Wearing kitchen gloves to keep your hands from staining, knead 7 oz. almond paste with a few drops of green food coloring on a surface, dusting with powdered sugar as needed if sticking, until evenly colored and no streaks remain. Place on a sheet of parchment paper dusted with powdered sugar and roll out to about a 14x10" rectangle. Using parchment, invert almond paste onto cake; peel away parchment and discard. Trim and tuck edges to perfectly fit pan; discard excess.

  9. Step 9: Whisk remaining 2 cups (220 g) powdered sugar and 2 Tbsp. water in a medium bowl until smooth and very thick. (Add more sugar or water as needed to adjust consistency.) Transfer icing to a pastry bag fitted with a very small straight tip (or use a resealable plastic bag and snip off one corner); pipe a pattern on top of marzipan as desired. Decorate with candied fruit and/or silver dragées as desired.

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