Italian Grandmas Lemon Custard (Printable)

Light cake layered with silky lemon custard, bursting with bright citrus flavor and old-world charm.

# What You Need:

→ Cake Components

01 - 1 cup granulated sugar
02 - 1/2 cup unsalted butter, softened
03 - 3 large eggs, separated
04 - 1 tablespoon lemon zest
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

→ 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

→ Assembly and Garnish

17 - Powdered sugar for dusting
18 - Thin lemon slices or curls

# Steps:

01 - Preheat oven to 350°F. Grease and flour a 9-inch round cake pan.
02 - In a large bowl, cream sugar and butter until pale and fluffy. Add egg yolks one at a time, beating well after each addition. Mix in lemon zest and juice.
03 - In separate bowl, combine flour, baking powder, and salt.
04 - Add half the dry ingredients to wet mixture, mix gently. Add milk. Finish with remaining dry ingredients and mix just until incorporated.
05 - Beat egg whites to stiff peaks in clean bowl. Gently fold into batter in three additions, taking care not to deflate mixture.
06 - Pour batter into prepared pan and smooth top. Bake 30-35 minutes until toothpick inserted in center comes out clean. Cool in pan 10 minutes, then transfer to wire rack to cool completely.
07 - In saucepan, warm milk over medium heat until just simmering.
08 - Whisk together sugar, egg yolks, and cornstarch until smooth in separate bowl.
09 - Slowly pour hot milk into egg mixture while whisking constantly. Return to saucepan and cook over medium-low heat, stirring constantly, until thickened, 5-7 minutes.
10 - Remove from heat. Stir in butter, lemon zest, and lemon juice. Cover with plastic wrap directly on surface and cool completely.
11 - Slice cake horizontally in half. Spread lemon custard evenly over bottom layer, then top with second cake layer.
12 - Dust with powdered sugar and garnish with lemon slices or curls if desired. Chill 30 minutes before serving for best texture.

# Expert Advice:

01 -
  • The magic trick cake that creates its own luscious custard layer while baking, but we are making it the traditional grandmas way with separate layers for better texture control.
  • Perfectly balanced tart and sweet, like lemonade in cake form but sophisticated enough for dinner parties.
  • The kind of dessert that makes people close their eyes when they take the first bite.
02 -
  • Room temperature ingredients combine better and create a more even texture, I learned this the hard way after too many dense cakes.
  • Folding egg whites seems tedious but it is the secret to that cloud-like cake texture, do not rush this step or you will lose all the volume.
  • The custard must be completely cool before assembling, otherwise it will melt into the cake and you will lose those beautiful distinct layers.
03 -
  • When separating eggs, do this over a small bowl first, then transfer each yolk or white to its main container, one broken yolk ruins the whole batch of whites.
  • If your custard seems lumpy after cooking, press it through a fine mesh sieve while it is still warm, nobody will ever know.

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