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Lemon Custard Cake

Recipe by Evelyn Marcella Rivera

One thin batter that separates into three distinct layers while it bakes — dense lemon custard on the bottom, creamy middle, and a light sponge on top. A magical single-pan dessert that looks far more impressive than the effort required.

  • Total Time1 hour 5 minutes
  • Yield9 squares 1x

Ingredients

Units Scale

Wet Ingredients

  • 0.5 cup unsalted butter, melted and slightly cooled
  • 4 large eggs, separated
  • 0.75 cup granulated sugar
  • 1 tbsp lemon zest (from about 1 lemon)
  • 0.5 cup fresh lemon juice (from 2-3 lemons)
  • 1 tsp vanilla extract
  • 2 cups whole milk, lukewarm

Dry Ingredients

  • 0.75 cup all-purpose flour
  • 0.25 tsp salt

For Serving

  • powdered sugar, for dusting (optional)

Instructions

  1. Preheat Oven and Prep Pan Preheat Oven and Prep Pan: Heat the oven to 325°F (160°C). Line an 8×8-inch baking dish with parchment paper and lightly grease it.
  2. Beat Egg Yolks and Sugar Beat Egg Yolks and Sugar: Whisk egg yolks with granulated sugar until pale and thick. Add melted butter, lemon zest, lemon juice, and vanilla. Mix until combined.
  3. Add Flour and Milk Add Flour and Milk: Whisk in flour and salt. Slowly add the lukewarm milk, whisking constantly until the batter is smooth and thin. This is correct — do not add more flour.
  4. Whip the Egg Whites Whip the Egg Whites: In a completely clean bowl, beat egg whites to stiff peaks. Fold one-third into the batter to lighten it, then fold in the rest loosely — leaving small white clumps is intentional and essential for the layers to form.
  5. Pour and Bake Pour and Bake: Pour the batter into the prepared pan. Bake for 40 to 45 minutes until the top is golden and springs back slightly when touched. The center may look barely set — it will firm up as it cools.
  6. Cool and Chill Cool and Chill: Let the cake cool completely in the pan, then refrigerate for at least 1 hour until the custard layer is fully set. Serve cold.
  7. Slice and Serve Slice and Serve: Cut into 9 squares and dust with powdered sugar before serving if desired.

Notes

The batter will look thin and lumpy before baking — this is correct. Do not overfold the egg whites; visible white clumps in the batter are what create the sponge layer. Serve cold for the clearest layer definition. The cake keeps refrigerated for up to 3 days. Variations: replace lemon with orange or lime juice and zest, or omit citrus entirely and double the vanilla for a classic vanilla custard cake.

  • Prep Time: 20 minutes
  • Cook Time: 45 minutes
  • Category: Dessert
  • Cuisine: European, French

Nutrition

  • Calories: 230
  • Sugar: 20
  • Sodium: 110
  • Fat: 12
  • Saturated Fat: 7
  • Carbohydrates: 27
  • Protein: 5
  • Cholesterol: 110

Find it online: https://blesseddish.com/lemon-custard-cake/