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A slice of Lemon Custard Cake with a soft, creamy custard layer and a fluffy cake top, dusted with powdered sugar.

Easy Lemon Custard Cake Recipe – Soft, Creamy, and Bursting with Lemon Flavor!


  • Author: Sylvia
  • Total Time: 1 hour
  • Yield: 9 servings
  • Diet: Vegetarian

Description

This Easy Lemon Custard Cake is a dreamy dessert that magically separates into three layers while baking—a light sponge on top, a silky lemon custard center, and a slightly dense bottom. Bursting with fresh citrus flavor, this simple yet elegant cake is perfect for summer gatherings, tea time, or whenever you need a refreshing sweet treat!


Ingredients

  • 4 eggs – Separated, at room temperature

  • ¾ cup sugar

  • ½ cup unsalted butter – Melted and slightly cooled

  • 1 teaspoon vanilla extract

  • ¾ cup all-purpose flour

  • ¼ cup freshly squeezed lemon juice

  • Zest from 2 large lemons

  • 1 ¾ cups milk – Lukewarm

  • Powdered sugar – For dusting


Instructions

  1. Preheat & Prepare:

    • Preheat your oven to 325°F (163°C).

    • Line an 8×8-inch baking dish with parchment paper, leaving some overhang for easy removal. Lightly grease with cooking spray.

  2. Whip the Egg Whites:

    • Using a hand or stand mixer, whip the egg whites until stiff peaks form. Set aside.

  3. Mix Egg Yolks & Sugar:

    • In a separate bowl, beat the egg yolks and sugar together until pale yellow and slightly thick.

  4. Add Butter & Vanilla:

    • Mix in the melted butter and vanilla extract until smooth.

  5. Incorporate Dry Ingredients:

    • Gradually mix in the flour, ensuring it’s fully incorporated.

  6. Add Lemon Juice & Zest:

    • Stir in the lemon juice and grated lemon zest.

  7. Slowly Add Milk:

    • Gradually pour in the lukewarm milk, stirring continuously. The batter will be very thin—this is normal!

  8. Fold in Egg Whites:

    • Gently whisk in the beaten egg whites by hand, leaving small lumps. These lumps float to the top while baking, creating the cake’s signature layers.

  9. Bake to Perfection:

    • Pour the batter into the prepared dish.

    • Bake for 40-60 minutes, or until the center is slightly jiggly but the top is firm.

    • If the top browns too quickly, loosely cover with aluminum foil.

  10. Cool & Dust with Powdered Sugar:

  • Let the cake cool completely before dusting with powdered sugar. Slice, serve, and enjoy!

Notes

  • Batter will be very thin – This is normal! The magic layers form while baking.

  • Don’t overmix the egg whites – Leaving some lumps helps create the signature texture.

  • Check for doneness after 35 minutes – Ovens vary, so keep an eye on the cake.

  • If overbaked, the custard will be firm rather than creamy – The center should have a slight jiggle.

  • Best served chilled – Refrigerate for at least an hour before slicing for the best texture.

  • Equipment Needed:

    8×8-inch baking dish
    Mixing bowls
    Hand mixer or stand mixer
    Whisk
    Parchment paper
    Cooking spray
    Sifter (for powdered sugar)

  • Prep Time: 15 minutes
  • Cook Time: 45 minutes
  • Category: Desserts
  • Method: Bake
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice
  • Calories: 210 kcal
  • Sugar: 18g
  • Sodium: 50mg
  • Fat: 10g
  • Saturated Fat: 6g
  • Unsaturated Fat: 3g
  • Trans Fat: 0g
  • Carbohydrates: 25g
  • Fiber: 0.5g
  • Protein: 4g
  • Cholesterol: 90mg

Keywords: Lemon custard cake, easy lemon dessert, custard cake recipe, summer lemon cake, lemon magic cake