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Lemon Bar Cake

A delightful Lemon Bar Cake that combines the tangy flavors of lemon bars with the fluffy texture of cake. Perfect for any occasion, this cake is sure to impress with its vibrant taste and beautiful presentation.
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Prep Time 45 minutes
Cook Time 35 minutes
Total Time 1 hour 20 minutes
Servings: 12 slices
Course: Dessert
Cuisine: American
Calories: 450
Ingredients Notes

Ingredients
  

Crust
  • 1/4 cup granulated sugar
  • 12 tablespoons unsalted butter room temperature
  • 2 1/2 cups all-purpose flour
  • 1/2 teaspoon Kosher salt
Cake
  • 3 cups cake flour
  • 1 3/4 cup granulated sugar
  • 1/4 cup instant lemon pudding mix
  • 1/2 teaspoon salt
  • 2 teaspoons baking powder
  • 12 tablespoons unsalted butter at room temperature
  • 1 1/4 cup buttermilk at room temperature
  • 1 teaspoon lemon extract
  • 6 egg whites at room temperature
Lemon Filling
  • 1 cup granulated sugar
  • 1 tablespoon grated lemon zest one large lemon
  • 1/2 cup lemon juice about 3 lemons
  • 3 large eggs
  • 4 egg yolks
  • 4 tablespoons cold unsalted butter cut into small pieces
Lemon Buttercream
  • 2 cups unsalted butter slightly cold
  • 6 cups powdered sugar measured and then sifted
  • 2 teaspoons lemon extract
  • 4 tablespoons heavy whipping cream
  • Pinch salt
Optional
  • Yellow food coloring optional

Notes

For an extra burst of lemon flavor, consider adding a lemon simple syrup to the cake layers after baking.