Italian Rum Cake - Bake Baba al Rum Today

Get ready to bring a slice of Italian bakery heaven right into your kitchen! This isn't just any cake; it's the ultimate `Italian rum cake`, also known as `Baba al Rum` (the layered Italian-American version), a show-stopping dessert that promises to impress. Forget dry, bland cakes – our recipe for this `delicious dessert` will guide you step-by-step to create a masterpiece that tastes like it came straight from a professional pastry chef. Whether you're a seasoned baker or just starting out, we'll make sure you nail every component, from the airy `sponge cake mixture` to the decadent `butter rum syrup` and creamy fillings.
A perfectly moist, rum-soaked `sponge cake` that practically melts in your mouth.
Two luscious, velvety pastry creams (vanilla and chocolate!) that are surprisingly easy to make.
A stable, dreamy whipped cream frosting that holds its shape beautifully for stunning presentation.
This recipe is for the layered Italian-American bakery-style cake, commonly found in Italian bakeries across the US.
While it shares a name, it's different from the individual, yeast-risen babà al rum pastries you might find in Italy. (We'll chat more about that in our FAQ section!)

Ingredients

• For the Pan di Spagna (Sponge Cake)
• 6 large eggs, at room temperature
• 1 cup (200g) granulated sugar
• 1 teaspoon pure vanilla extract
• 1 cup (120g) cake flour, sifted
• 1/4 teaspoon salt
• For the Crema Pasticcera (Pastry Cream)
• 3 cups (720ml) whole milk
• 1 strip lemon peel (about 2 inches long)
• 6 large egg yolks
• 3/4 cup (150g) granulated sugar
• 1/4 cup (30g) cornstarch (or all-purpose flour)
• 1 teaspoon pure vanilla extract
• 2 ounces (56g) bittersweet or semi-sweet chocolate, finely chopped (for chocolate cream)
• For the Butter-Rum Soaking Syrup
• 1 cup (240ml) water
• 1/2 cup (100g) granulated sugar
• 2 tablespoons unsalted butter
• 1/2 cup (120ml) dark rum (or rum extract for alcohol-free)
• Optional: 1 strip orange or lemon zest
• For the Stabilized Whipped Cream Frosting & Filling
• 2 cups (480ml) heavy cream, very cold
• 1/4 cup (50g) powdered sugar
• 1 teaspoon pure vanilla extract
• 1 teaspoon unflavored gelatin powder
• 2 tablespoons cold water
• For Assembly & Garnish
• 1 cup (about 100g) sliced almonds or crushed peanuts
• Maraschino cherries or fresh raspberries
• Chocolate shavings or curls

Directions

1. Make the Pastry Cream (Crema Pasticcera)
   1. In a medium saucepan, combine the whole milk and lemon peel. Heat over medium heat until it just begins to simmer around the edges. Remove from heat and let steep for 10 minutes, then discard the lemon peel.
   2. In a separate medium bowl, whisk together the egg yolks, granulated sugar, and cornstarch (or flour) until pale yellow and smooth.
   3. Gradually temper the egg yolk mixture by slowly whisking in about half of the warm milk. Then, pour the tempered mixture back into the saucepan with the remaining milk.
   4. Return the saucepan to medium-low heat, whisking constantly, until the cream thickens significantly and comes to a gentle boil, about 3-5 minutes. Cook for another minute, whisking, to ensure the starch is fully cooked. The cream should be thick enough to coat the back of a spoon.
   5. Remove from heat, stir in the vanilla extract. Immediately pass the cream through a fine mesh strainer into a clean bowl to remove any lumps.
   6. To make the chocolate cream, transfer half of the strained pastry cream to a separate bowl and stir in the chopped chocolate until fully melted and smooth.
   7. Cover both bowls of pastry cream directly with plastic wrap (pressing it onto the surface to prevent a skin from forming) and chill in the refrigerator for at least 2-4 hours, or preferably overnight, until thoroughly cold and set.
2. Bake the Sponge (Pan di Spagna)
   1. Preheat your oven to 350°F (175°C). Grease an 8-inch springform pan and line the bottom with parchment paper. Lightly flour the sides, tapping out any excess.
   2. In a large, clean bowl (preferably of a stand mixer with a whisk attachment), combine the eggs, granulated sugar, and vanilla extract.
   3. Whip the mixture on high speed for 8-10 minutes, until it becomes very pale, thick, and forms a "ribbon" when the whisk is lifted (the mixture should slowly fall back into the bowl in a ribbon-like stream and hold its shape for a few seconds before dissolving). This is crucial for an airy sponge.
   4. Sift the cake flour and salt over the egg mixture in three additions. Gently fold in the flour with a spatula, using a light hand and cutting motion, until just combined. Be careful not to deflate the air you've incorporated.
   5. Pour the batter into the prepared springform pan and gently smooth the top.
   6. Bake for 30-35 minutes, or until the top is golden brown, springs back when lightly touched, and a wooden skewer inserted into the center comes out clean.
   7. Remove from oven and let cool in the pan on a wire rack for 10 minutes before carefully inverting it onto the rack to cool completely. Once cool, remove the parchment paper.
3. Make the Butter-Rum Soaking Syrup
   1. In a small saucepan, combine water and granulated sugar. Heat over medium heat, stirring occasionally, until the sugar is fully dissolved. Bring to a gentle simmer.
   2. Remove from heat. Whisk in the butter until melted. Let the syrup cool slightly, to lukewarm.
   3. Once lukewarm, stir in the dark rum (or rum extract). If using, add the optional citrus zest for extra aroma. Set aside.
4. Lighten Pastry Cream (Diplomat-Style) + Make Frosting
5. For the filling: In a cold bowl, whip 1 cup (240ml) of the heavy cream with 2 tablespoons of powdered sugar and 1/2 teaspoon vanilla extract until soft peaks form.
   1. Retrieve the chilled vanilla and chocolate pastry creams. Briefly re-whip each portion with a whisk or hand mixer until smooth and creamy again.
   2. Gently fold half of the whipped cream into the vanilla pastry cream and the other half into the chocolate pastry cream. This creates a lighter, "diplomat" cream perfect for filling. Keep chilled until assembly.
6. For the frosting: In a small microwave-safe bowl, sprinkle gelatin powder over 2 tablespoons of cold water. Let it bloom for 5 minutes. Microwave for 10-15 seconds, or until the gelatin is fully dissolved and clear (do not boil). Let it cool slightly, but ensure it remains liquid.
   1. In a very cold bowl, whip the remaining 1 cup (240ml) heavy cream with 2 tablespoons powdered sugar and 1/2 teaspoon vanilla extract until soft peaks form.
   2. While continuing to whip on medium speed, slowly drizzle in the cooled, dissolved gelatin. Increase speed to high and whip until stiff peaks form. Be careful not to over-whip. This is your stabilized whipped cream frosting. Keep chilled until ready to use.
7. Assemble the Cake (No Sliding, No Guessing)
   1. Using a long serrated knife, carefully slice the cooled sponge cake horizontally into three even layers.
   2. Place the first sponge layer on your serving plate or cake stand. If desired, place a cake ring around it with acetate lining for easier assembly.
   3. Brush or pour about 1/3 of the butter-rum syrup evenly over the first cake layer, ensuring it's well-soaked but not soggy.
   4. Spread the vanilla diplomat cream evenly over the first soaked layer.
   5. Carefully place the second sponge layer on top. Soak with another 1/3 of the rum syrup.
   6. Spread the chocolate diplomat cream evenly over the second soaked layer.
   7. Place the third and final sponge layer on top. Soak generously with the remaining rum syrup.
   8. Cover the cake loosely with plastic wrap and chill in the refrigerator for at least 2-4 hours (or up to overnight) to allow the flavors to meld and the creams to set firmly. This prevents sliding during frosting.
8. Frost + Finish
   1. Once the cake is well-chilled, remove the cake ring and acetate (if used).
   2. Use an offset spatula to frost the top and sides of the cake with the stabilized whipped cream frosting. Aim for a smooth, even coating.
   3. Gently press the sliced almonds or crushed peanuts onto the sides of the cake.
   4. Pipe a decorative border around the top edge of the cake using any remaining frosting.
   5. Arrange maraschino cherries or fresh raspberries on top, and scatter chocolate shavings or curls for a beautiful finish.
   6. Keep chilled until ready to serve.