Italian Lemon Custard Cake (Print Version)
Light, airy cake meets tangy lemon custard in this beloved Italian sweet treat.
# What You Need:
→ For the Cake
01 - 1 cup granulated sugar
02 - 1/2 cup unsalted butter, softened
03 - 3 large eggs, separated
04 - 1 tablespoon lemon zest (from about 2 lemons)
05 - 1/4 cup fresh lemon juice
06 - 1/2 cup whole milk
07 - 1 cup all-purpose flour
08 - 1 teaspoon baking powder
09 - 1/4 teaspoon salt
→ For the Lemon Custard
10 - 1 1/2 cups whole milk
11 - 1/2 cup granulated sugar
12 - 3 large egg yolks
13 - 2 tablespoons cornstarch
14 - 2 tablespoons unsalted butter
15 - 2 teaspoons lemon zest
16 - 1/4 cup fresh lemon juice
→ For Assembly & Garnish
17 - Powdered sugar, for dusting
18 - Thin lemon slices or curls, optional
# How To Make:
01 - Preheat the oven to 350°F. Grease and flour a 9-inch round cake pan.
02 - In a large bowl, cream together the sugar and butter until pale and fluffy. Add the egg yolks one at a time, beating well after each addition. Mix in the lemon zest and juice.
03 - In a separate bowl, combine flour, baking powder, and salt. Add half the dry ingredients to the wet mixture, mix gently, then add the milk. Finish with the remaining dry ingredients and mix just until incorporated.
04 - In a clean bowl, beat the egg whites to stiff peaks. Gently fold the egg whites into the batter in three additions, taking care not to deflate the mixture.
05 - Pour the batter into the prepared pan and smooth the top. Bake for 30–35 minutes, or until a toothpick inserted in the center comes out clean. Let the cake cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
06 - In a saucepan, warm the milk over medium heat until just simmering. In a separate bowl, whisk together sugar, egg yolks, and cornstarch until smooth. Slowly pour the hot milk into the egg mixture, whisking constantly.
07 - Return the mixture to the saucepan and cook over medium-low heat, stirring constantly, until thickened (5–7 minutes). Remove from heat, stir in butter, lemon zest, and lemon juice. Cover with plastic wrap directly on the surface and cool completely.
08 - Once both cake and custard are cool, slice the cake horizontally in half. Spread the lemon custard evenly over the bottom layer, then top with the second cake layer.
09 - Dust with powdered sugar and garnish with lemon slices or curls if desired. Chill for 30 minutes before serving for best texture.
# Expert Tips:
01 -
- The magic of cutting into this cake reveals the most gorgeous surprise, that creamy yellow custard peeking through like sunshine
- It strikes that perfect balance between light and rich, the kind of dessert that leaves everyone satisfied but not uncomfortably full
- Something about lemon just makes people happy, maybe its how it wakes up your tastebuds even on the grayest days
02 -
- The custard must be completely cool before you spread it, otherwise it will melt into the cake and youll lose those beautiful distinct layers
- When folding in egg whites, never use a mixer or youll destroy all those air bubbles you worked so hard to create, use a rubber spatula and gentle strokes instead
- Tempering the eggs with hot milk is the crucial step that prevents scrambled eggs in your custard, pour slowly and whisk constantly
03 -
- Room temperature ingredients are non negotiable here, cold eggs and butter will fight you every step of the way
- When in doubt about the custard being done, trust the thermometer more than the clock, it should reach 170°F to be perfectly set