This Italian Lemon Custard Cake, known traditionally as Torta della Nonna, is a classic dessert that will transport you straight to a Tuscan countryside kitchen. Imagine a buttery, delicate shortcrust pastry (pasta frolla) filled with a rich, velvety lemon-infused custard, then topped with a sprinkle of pine nuts and a dusting of powdered sugar. It’s a truly magical combination of textures and flavors. While it looks impressive, this recipe breaks down every step to ensure even enthusiastic home cooks can achieve a perfect result. We’re going to create a dessert that is both rustic and elegant, and surprisingly simple to make.
What is an Italian Lemon Custard Cake?
An Italian Lemon Custard Cake, or Torta della Nonna (“Grandmother’s Cake”), is a beloved Italian dessert. It features two layers of sweet, tender shortcrust pastry. Sandwiched between them is a thick, luscious pastry cream, or crema pasticcera, brightly flavored with fresh lemon zest. The top is traditionally garnished with pine nuts and a generous dusting of powdered sugar. It’s a dessert that perfectly balances the rich creaminess of the custard with the crumbly, buttery crust.
Why You’ll Love This Recipe
Here are just a few reasons why this will become your new favorite dessert recipe:
- Foolproof Instructions: We’ll walk you through every stage, from making the pastry to ensuring a perfectly smooth custard, guaranteeing success.
- Incredibly Delicious: The contrast between the flaky, buttery crust and the creamy, zesty lemon filling is simply divine.
- Perfect for Any Occasion: It’s elegant enough for a special dinner party but simple enough for a weekend treat with family.
- Make-Ahead Friendly: You can prepare components in advance, making it a stress-free option for entertaining. Looking for another make-ahead dessert? This creamy peanut butter cheesecake is always a crowd-pleaser.
The Key Ingredients
This recipe uses simple, high-quality ingredients to create its signature flavor. Here’s what you’ll need:
For the Pasta Frolla (Pastry)
- All-Purpose Flour: Provides the structure for our tender, shortbread-like crust.
- Unsalted Butter: Cold and cubed is key! This creates pockets of steam, resulting in a flaky texture.
- Granulated Sugar: Adds just the right amount of sweetness to the crust.
- Large Eggs: Binds the dough together and adds richness.
- Lemon Zest: Infuses the pastry with a subtle, bright citrus aroma that complements the filling.
- Baking Powder: Gives the crust a slight lift, keeping it from becoming too dense.
For the Lemon Custard Filling
- Whole Milk: The base of our rich and creamy custard.
- Large Egg Yolks: Provide richness, color, and thickening power.
- Granulated Sugar: Sweetens the custard to balance the tartness of the lemon.
- Cornstarch: The primary thickening agent that ensures a firm yet silky custard.
- Lemon Zest & Juice: The star of the show! Fresh zest and juice provide a vibrant, authentic lemon flavor.
- Vanilla Extract: Adds a layer of aromatic warmth to the filling.
Step-by-Step Instructions for the Perfect Italian Lemon Custard Cake
Follow these steps carefully for a flawless Torta della Nonna.
Step 1: Prepare the Pasta Frolla
First, in a large bowl, whisk together the flour, sugar, baking powder, and lemon zest. Add the cold, cubed butter and use your fingertips or a pastry cutter to work the butter into the flour until it resembles coarse breadcrumbs. Mix in the eggs until the dough just comes together. Do not overwork it. Form the dough into two discs (one slightly larger than the other), wrap them in plastic wrap, and refrigerate for at least one hour.
Step 2: Make the Lemon Custard
While the dough chills, prepare the custard. In a medium saucepan, heat the milk and lemon zest over medium heat until it’s just about to simmer. In a separate bowl, whisk the egg yolks and sugar together until pale and fluffy. Whisk in the cornstarch until smooth. Temper the egg mixture by slowly pouring about half of the hot milk into the yolk mixture while whisking constantly. Pour the tempered yolk mixture back into the saucepan with the remaining milk. Cook over medium heat, whisking constantly, until the custard thickens and begins to bubble. This should take about 5-7 minutes. Remove from the heat and stir in the fresh lemon juice and vanilla extract. Transfer the custard to a bowl, cover it with plastic wrap pressed directly onto the surface to prevent a skin from forming, and let it cool completely.
Step 3: Assemble and Bake the Cake
Preheat your oven to 350°F (175°C). Lightly grease and flour a 9-inch tart pan or springform pan. On a floured surface, roll out the larger disc of dough to about 1/8-inch thickness and carefully transfer it to your prepared pan, pressing it into the bottom and up the sides. Trim any excess dough. Pour the cooled custard into the pastry shell and spread it evenly. Roll out the second disc of dough to form the top crust. Place it over the custard, trim the edges, and press firmly to seal. Brush the top with a little milk and sprinkle with pine nuts. Bake for 40-45 minutes, or until the crust is golden brown. Let the cake cool completely in the pan before dusting with powdered sugar and serving. For another fantastic dessert, try this easy coconut ricotta cake.
Pro-Tips for a Flawless Cake
Making an authentic Italian Lemon Custard Cake is easy with these tips:
- Keep Your Dough Cold: Don’t skip chilling the pasta frolla. Cold dough is easier to handle and results in a more tender, flaky crust.
- Whisk Custard Constantly: To avoid lumps and ensure a silky-smooth texture, whisk the custard continuously as it heats.
- Cool the Custard Completely: Adding hot or warm custard to the pastry will make the bottom crust soggy. Be patient and let it cool.
- Press Plastic Wrap on the Custard: This simple trick prevents a skin from forming on your pastry cream as it cools.
Storing and Make-Ahead Instructions
This cake is best enjoyed within 2-3 days. Store it covered in the refrigerator. The pasta frolla dough can be made up to 2 days in advance and stored in the refrigerator, or frozen for up to a month. The custard can also be made a day in advance and kept in the refrigerator with plastic wrap pressed onto its surface.
Frequently Asked Questions
Yes. You can make the pastry dough up to 2 days in advance and refrigerate it, or freeze it for a month. The custard can be made one day ahead and stored in the fridge with plastic wrap pressed directly onto its surface.
The key to smooth custard is to whisk it constantly while it cooks over medium heat. It’s also crucial to temper the eggs by slowly adding the hot milk to the egg mixture while whisking vigorously before returning it all to the pot.
Store the cooled cake in an airtight container or covered with plastic wrap in the refrigerator for up to 3 days. The crust will soften slightly over time but it will still be delicious.
Torta della Nonna translates to ‘Grandmother’s Cake.’ It is a classic Italian dessert originating from the Tuscany region, featuring a sweet pastry crust filled with a thick lemon-flavored custard and topped with pine nuts.
If your dough is cracking, it’s likely too cold. Let it sit at room temperature for 5-10 minutes to soften slightly before you try rolling it again. If it’s still cracking, you can patch any tears directly in the pan.
More Delicious Recipes to Try
If you enjoyed this classic Italian dessert, you’ll love exploring other sweet creations. This decadent chocolate chip cookie dough cheesecake is a showstopper, and for a savory Italian meal, you can’t go wrong with our perfectly baked Italian chicken.
Share Your Creation!
We are certain that this Italian Lemon Custard Cake will become a staple in your dessert rotation. It’s a recipe filled with tradition and flavor that brings a little piece of Italy right into your home. If you make this recipe, we would love to see it! Share your photos and tag us on Pinterest. Happy baking!
Italian Lemon Custard Cake Recipe
Italian Lemon Custard Cake (Torta della Nonna)
Ingredients
Equipment
Method
- In a large bowl, whisk together the flour, sugar, baking powder, and lemon zest. Add the cold, cubed butter and use a pastry cutter or your fingertips to cut the butter into the flour until it resembles coarse crumbs.
- Mix in the eggs until the dough just comes together. Be careful not to overwork it. Divide the dough into two discs, one slightly larger than the other. Wrap both in plastic wrap and refrigerate for at least 1 hour.
- In a medium saucepan, heat the milk and lemon zest over medium heat until it is hot and just beginning to simmer. While the milk heats, whisk the egg yolks and sugar together in a bowl until pale and creamy. Whisk in the cornstarch until fully combined.
- Slowly pour about half of the hot milk into the egg yolk mixture while whisking constantly to temper the eggs. Pour the tempered egg mixture back into the saucepan with the remaining milk. Cook over medium heat, whisking constantly, until the custard has thickened and starts to bubble, about 5-7 minutes.
- Remove the custard from the heat and stir in the fresh lemon juice and vanilla extract. Transfer to a clean bowl and press a piece of plastic wrap directly onto the surface of the custard. Let it cool completely.
- Preheat your oven to 350°F (175°C). Grease and flour a 9-inch tart pan with a removable bottom or a springform pan. On a lightly floured surface, roll out the larger dough disc and carefully line the prepared pan with it. Trim the edges.
- Pour the cooled lemon custard into the pastry-lined pan and spread evenly. Roll out the smaller dough disc to create the top crust. Place it over the custard, trim any excess, and press the edges to seal. Brush the top with a little milk and sprinkle with pine nuts.
- Bake for 40-45 minutes, until the crust is a deep golden brown. Let the cake cool completely in the pan before removing. Dust generously with powdered sugar before slicing and serving.
Notes
Do not overwork the pasta frolla dough, or the crust will be tough instead of tender.
Store leftover cake in an airtight container in the refrigerator for up to 3 days.
