Italian Grandma’s Lemon Custard Cake – Classic Recipe
Get ready to bring a beloved family treat into your kitchen with this radiant Italian Grandma’s Lemon Custard Cake – Classic Recipe. Imagine a buttery, delicate crust cradling a bright, creamy lemon custard that tastes like summer on a plate; this is the secret to making any gathering feel special. Every bite brings sunshiny citrus and old-world comfort, just the way nonna used to make it! Whether you’re new to baking or seasoned in the kitchen, this dessert is as inviting as it is impressive—perfect for both weeknight cravings and festive celebrations.

Ingredients You’ll Need
This dreamy cake calls for simple ingredients, each one playing a starring role in flavor and texture. Fresh lemons make it zippy and cheerful, while butter and yolks guarantee that unmistakable, velvety richness. Gather these pantry staples to ensure your Italian Grandma’s Lemon Custard Cake – Classic Recipe turns out truly unforgettable.
- All-Purpose Flour: Forms the tender structure of the crust, holding everything together beautifully.
- Granulated Sugar: Adds the perfect amount of sweetness to both crust and custard, balancing tangy lemon flavors.
- Pinch of Salt: Enhances all the other ingredients, making the flavors more vibrant.
- Unsalted Butter: Chilled and cubed for that flaky, melt-in-your-mouth pastry texture.
- Egg Yolk: Binds the crust and brings richness and color.
- Cold Water: Helps bring the dough together without making it tough.
- Whole Milk: Creates a luscious custard with the ideal creamy consistency.
- Large Egg Yolks: Make the custard velvety and give it a beautiful golden hue.
- Cornstarch: Thickens the custard naturally for that perfect, sliceable texture.
- Lemon Zest: Infuses the cake with fragrant citrus oils and zesty flavor.
- Fresh Lemon Juice: Brings brightness and genuine lemon taste to the filling—use freshly squeezed for best results.
- Unsalted Butter (for custard): Finishes the custard, making it extra smooth and rich.
- Vanilla Extract: Adds a subtle warmth that rounds out the lemony brightness.
How to Make Italian Grandma’s Lemon Custard Cake – Classic Recipe
Step 1: Make the Crust
Begin by mixing your flour, sugar, and just a pinch of salt in a large bowl. Next, add those cold cubes of butter and use a pastry cutter or your fingertips to blend them into the dry ingredients until you have a crumbly, almost sandy texture. Stir in the egg yolk and a couple tablespoons of cold water, adding just enough for the dough to come together. Press your finished dough firmly and evenly into a tart pan or square cake pan, then pop it in the fridge to chill for about 20–30 minutes. This rest helps the crust hold together and bake up especially tender.
Step 2: Pre-Bake the Crust
Preheat your oven to 350°F (175°C) while the crust chills. Once ready, prick the base with a fork—this keeps bubbles at bay as it bakes, leading to a flat, even bottom. Bake for 12–15 minutes, until the edges just start to turn a gentle golden hue. Let it cool slightly; this step ensures the crust stays crisp when we pour in the luscious lemon custard next.
Step 3: Prepare the Lemon Custard
Time to whip up the star of the Italian Grandma’s Lemon Custard Cake – Classic Recipe! In a medium saucepan, whisk together the granulated sugar, cornstarch, lemon zest, and those golden yolks. Gradually whisk in the whole milk, making sure everything is smooth. Cook gently over medium heat, stirring constantly until the mixture thickens to a pudding-like consistency. Remove from the heat and immediately stir in fresh lemon juice, a touch more butter, and vanilla extract—the aroma is pure comfort!
Step 4: Bake the Cake
Pour the warm, glossy custard into your pre-baked crust, smoothing the top with a spatula. Slide the pan into the oven and bake for 25–30 minutes, just until the custard is set around the edges but still has a gentle wobble at the center. Cooling completely is key—this lets the custard firm up for clean slices and the flavors meld for an authentically delicious experience.
How to Serve Italian Grandma’s Lemon Custard Cake – Classic Recipe

Garnishes
Add a final flourish worthy of Nonna herself! A dusting of powdered sugar makes it look like a slice of sunshine. You can also add some delicate curls of lemon zest or a few plump berries to make the colors pop. Fresh mint leaves provide a fragrant, elegant touch that pairs beautifully with the citrus.
Side Dishes
Pairing your cake with something light and refreshing lets it truly shine. Try serving alongside a scoop of vanilla gelato, or with a crisp fruit salad of berries and melon for a summery finish. A hot espresso or cup of strong tea complements the sweet-tart custard wonderfully.
Creative Ways to Present
While this cake is a showstopper on its own, you can cut it into elegant squares for a dainty dessert tray or pair single slices with candied lemon slices for a special occasion. For parties, try baking the recipe in muffin tins for adorable, individually-sized cakes—the same comforting taste in a hand-held package!
Make Ahead and Storage
Storing Leftovers
Wrap leftover cake tightly in plastic wrap or store it in an airtight container in the refrigerator. It’ll stay wonderfully fresh and delicious for up to 3 days. The flavors deepen as it chills, making day-two slices almost more delicious!
Freezing
This cake freezes quite well, making it a great make-ahead option for gatherings. Slice it into portions, wrap each one tightly, and place them in a zip-top freezer bag. When you’re ready to serve, thaw overnight in the fridge for best texture and flavor.
Reheating
Baking the Italian Grandma’s Lemon Custard Cake – Classic Recipe means enjoying it cold or at room temperature, but if you like yours a bit warmer, gently microwave a slice for about 10–15 seconds. Be careful not to overheat or the custard can separate.
FAQs
Can I use bottled lemon juice instead of fresh?
Fresh lemon juice is highly recommended because it lifts the custard with zippy, authentic citrus flavor. Bottled juice can be dull or bitter, but if it’s your only option, just be sure it’s 100 percent pure lemon juice for the best result.
What if I don’t have a tart pan?
No tart pan? No problem! A square or round cake pan works beautifully. Just make sure to press the crust mixture evenly along the bottom so it bakes up evenly—don’t worry if it looks rustic, that’s part of the charm.
Can I make the crust ahead of time?
Absolutely! You can prepare and bake the crust a day in advance, letting it cool, then wrap it tightly until you’re ready to prepare the custard. This is a great way to split up the work for easy entertaining.
Is this dessert gluten-free?
The classic recipe uses all-purpose flour, so it isn’t naturally gluten-free. However, you can swap in your favorite cup-for-cup gluten-free flour blend for lovely results—just watch the texture when pressing the dough into the pan.
How do I know when the custard is fully set?
You’ll know it’s ready when the edges are firm and the center still jiggles slightly when you move the pan—think freshly set gelatin. It will continue to firm up as it cools, giving you neat, luscious slices when it’s time to serve.
Final Thoughts
Let your kitchen fill with the irresistible aroma of lemons and nostalgia with this Italian Grandma’s Lemon Custard Cake – Classic Recipe. One slice is all it takes to see why this sweet treat has stood the test of time. Whether you bake it for loved ones or simply to savor a taste of sunshine, you’ll be making beautiful memories in true Italian tradition. Give it a try—you won’t regret it!
PrintItalian Grandma’s Lemon Custard Cake – Classic Recipe
Indulge in the delightful flavors of Italian Grandma’s Lemon Custard Cake with a buttery crust and zesty lemon custard filling. This classic recipe is a perfect balance of sweet and tangy that will surely satisfy your dessert cravings.
- Prep Time: 45 minutes
- Cook Time: 40 minutes
- Total Time: 1 hour 25 minutes
- Yield: 1 cake 1x
- Category: Dessert
- Method: Baking
- Cuisine: Italian
- Diet: Vegetarian
Ingredients
For the Crust:
- 1½ cups all-purpose flour
- ¼ cup granulated sugar
- Pinch of salt
- ½ cup unsalted butter, cold and cubed
- 1 egg yolk
- 2–3 tbsp cold water
For the Lemon Custard:
- 1½ cups whole milk
- ¾ cup granulated sugar
- 3 large egg yolks
- ¼ cup cornstarch
- Zest of 1 lemon
- ½ cup fresh lemon juice (about 2 lemons)
- 2 tbsp unsalted butter
- 1 tsp vanilla extract
Instructions
- Make the Crust: In a bowl, mix flour, sugar, and salt. Cut in cold butter until the mixture is crumbly. Add egg yolk and cold water, stirring until dough forms. Press into a tart pan or square cake pan and chill for 20–30 minutes.
- Pre-Bake the Crust: Preheat oven to 350°F (175°C). Prick the base with a fork and bake for 12–15 minutes until lightly golden. Let cool slightly.
- Prepare the Lemon Custard: In a saucepan, whisk sugar, cornstarch, lemon zest, and yolks. Slowly add milk while whisking. Cook over medium heat until thickened. Remove from heat and stir in lemon juice, butter, and vanilla.
- Bake the Cake: Pour custard into pre-baked crust. Bake for 25–30 minutes until just set but still slightly jiggly in the center. Cool completely before slicing.
Nutrition
- Serving Size: 1 slice
- Calories: 285
- Sugar: 22g
- Sodium: 140mg
- Fat: 14g
- Saturated Fat: 8g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 36g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 115mg
Keywords: Italian, Lemon Custard Cake, Dessert, Classic Recipe