Torta Della Nonna

Classic Italian Custard Tart

AIR FRYER VERSION

Torta della Nonna is a dessert built on contrast: a tender shortcrust shell, a smooth lemon-scented custard filling, and a delicate topping of pine nuts and powdered sugar. It looks simple, but it demands care. In many Italian households, this cake is associated with patience, because every step depends on temperature, timing, and restraint.

Making it in an air fryer is absolutely possible, but only if the recipe is adjusted correctly. The custard must set gently. The crust must cook through without burning. The top must brown lightly without drying the filling.

This recipe respects all of that.

TIME, SIZE, AND EQUIPMENT

Prep time: 45 minutes
Chilling time: 30 minutes
Air fryer baking time: 35–45 minutes
Cooling time: minimum 2 hours

Pan size: 16–18 cm (6–7 inches), shallow tart pan or round cake pan
Yield: 6–8 slices

Air fryer required capacity: minimum 4 liters

INGREDIENTS

FOR THE PASTA FROLLA (SHORTCRUST)

250 g all-purpose flour (2 cups)
100 g granulated sugar (½ cup)
120 g cold unsalted butter, cubed
1 large egg + 1 egg yolk
Zest of 1 lemon
1 pinch fine salt
½ teaspoon vanilla extract

FOR THE CREMA PASTICCERA (CUSTARD FILLING)

500 ml whole milk (2 cups)
4 large egg yolks
120 g granulated sugar (½ cup + 1 tablespoon)
40 g cornstarch (⅓ cup)
Zest of 1 lemon
1 teaspoon vanilla extract

FOR THE TOPPING

30 g pine nuts (about 3 tablespoons)
Powdered sugar, for dusting after baking

IMPORTANT NOTES BEFORE STARTING

Use cold butter for the crust
Do not rush custard cooling
The tart must be fully cooled before slicing or it will collapse
Air fryer temperature must stay moderate; high heat will ruin the custard

STEP 1: MAKE THE PASTA FROLLA

In a large bowl, combine flour, sugar, salt, and lemon zest.

Add cold butter and rub it into the flour using fingertips until the mixture resembles coarse crumbs. Do not melt the butter. Texture matters.

Add whole egg, egg yolk, and vanilla extract.

Mix gently just until a dough forms. Do not knead. Overworking will make the crust tough.

Form dough into a flat disk, wrap tightly, and refrigerate for 30 minutes.

This rest allows gluten to relax and butter to firm up.

STEP 2: PREPARE THE CUSTARD (CREMA PASTICCERA)

Heat milk with lemon zest in a saucepan over medium heat. Do not boil. Heat until steaming, then remove from heat and let steep 5 minutes.

In a bowl, whisk egg yolks and sugar until pale and thick.

Whisk in cornstarch until completely smooth.

Slowly pour warm milk into egg mixture while whisking constantly.

Return mixture to saucepan and cook over medium-low heat, whisking continuously.

After 3–5 minutes, the custard will thicken noticeably.

Once thick enough to coat the back of a spoon, remove from heat immediately.

Stir in vanilla extract.

Transfer custard to a bowl, cover directly with plastic wrap touching the surface, and let cool to room temperature.

Custard must be cool before assembling.

STEP 3: ROLL AND SHAPE THE CRUST

Remove dough from refrigerator.

Roll between two sheets of parchment to about 3 mm thickness.

Line the bottom and sides of your pan, pressing gently into corners.

Trim excess dough.

Prick the base lightly with a fork.

STEP 4: FILL AND ASSEMBLE

Pour cooled custard into the crust and smooth the surface gently.

Sprinkle pine nuts evenly over the top. Do not press them in.

This is traditional. No lattice. No top crust.

STEP 5: AIR FRYER BAKING PROCESS

Preheat air fryer to 160°C (320°F) for 5 minutes.

Place tart pan into air fryer basket.

Bake at 160°C (320°F) for 20 minutes.

After 20 minutes:

loosely cover the tart with aluminum foil
reduce temperature to 150°C (300°F)

Continue baking for 15–25 more minutes.

Total baking time: 35–45 minutes

HOW TO KNOW IT IS DONE

The custard should be set but slightly wobbly in the center
The crust edges should be lightly golden
Pine nuts should be pale golden, not dark brown

If the center looks liquid, bake 5 more minutes and check again.

STEP 6: COOLING (NON-NEGOTIABLE)

Remove tart from air fryer.

Cool completely at room temperature, minimum 2 hours.

Do NOT refrigerate immediately. The custard needs to finish setting naturally.

Once fully cool, dust generously with powdered sugar.

TEXTURE & FLAVOR DESCRIPTION

Crust: tender, crumbly, lightly lemon-scented
Custard: smooth, creamy, not overly sweet
Top: nutty, delicate crunch
Overall: balanced, comforting, classic

STORAGE

Refrigerated, covered: up to 3 days
Best eaten within 24–48 hours

Remove from fridge 20 minutes before serving.

CALORIES & NUTRITION (APPROXIMATE)

Per slice (1 of 8):

Calories: 380–420 kcal
Fat: 22 g
Carbohydrates: 40 g
Sugar: 24 g
Protein: 7 g

COMMON MISTAKES

Baking at too high temperature
Using warm custard
Skipping foil cover halfway
Cutting before fully cool
Overworking the dough

FREQUENTLY ASKED QUESTIONS

Can I make this without pine nuts?

Yes. Almond slices are a common alternative.

Why is my custard grainy?

It overheated or boiled. Custard must cook gently.

Can I use ready-made crust?

Yes, but texture and flavor will be inferior.

Can I freeze Torta della Nonna?

Not recommended. Custard texture suffers.

Is this authentic?

Yes in ingredients and structure. The air fryer is the only modern adaptation.

FINAL NOTE

Torta della Nonna is not about speed. Even in an air fryer, it rewards patience. When done correctly, it tastes exactly like the cake that sits on Italian kitchen tables, dusted with sugar, waiting quietly to be sliced.

If you want, I can also:

convert it to chocolate custard
or write a traditional oven comparison