This lemon layer cake has two soft, citrus-packed layers wrapped in a cloud of cooked flour frosting that tastes like sweet whipped butter with a bright lemon finish.
The batter is easy to pull together: whisk, warm, and fold, with plenty of fresh zest and juice for a clear lemon flavor that never turns sharp. The frosting starts as a quick pudding-like base that gets beaten into soft butter, which makes it far lighter than standard buttercream. Plan on about 1 hour 50 minutes from start to finish, including the cooling time.
Table of Contents
Why This Lemon Layer Cake Recipe Works
Fresh zest and juice go into both the cake and the frosting, so lemon flavor shows up in every bite instead of fading behind the sugar. A small splash of lemon extract is optional and adds extra punch.
Beating the eggs with sugar until pale and thick builds structure, and the warm milk and butter mixture gives the crumb a moist, tender finish that stays soft for days.
The cooked flour frosting is much less sweet than powdered sugar frosting. It spreads smoothly, holds its shape between the layers, and keeps the cake from tasting heavy.
Ingredients for Lemon Layer Cake
- 2 cups all-purpose flour (for the cake; cake flour also works)
- 2 1/2 teaspoons baking powder and 1/4 teaspoon salt (for the cake)
- 4 large eggs at room temperature (for the cake)
- 1 1/2 cups superfine sugar (for the cake)
- 1/2 cup unsalted butter, cut into cubes (for the cake)
- 1 cup whole milk (for the cake)
- 3 teaspoons vanilla extract and 3 teaspoons vegetable oil (for the cake)
- 1/4 teaspoon lemon extract, optional (for the cake)
- 3 tablespoons lemon zest and 1/3 cup lemon juice (for the cake)
- 6 1/2 tablespoons all-purpose flour (for the frosting)
- 1 1/3 cups whole milk (for the frosting)
- 1 1/3 cups superfine sugar (for the frosting)
- 21 tablespoons unsalted butter, softened (for the frosting)
- 3 teaspoons lemon zest and 4 tablespoons lemon juice (for the frosting)
Lemon zest and juice. Zest the lemons before juicing them, then measure the juice from the same fruit. Rubbing the zest into the sugar with your fingertips releases even more flavor if you have a spare minute.
Eggs. Room temperature eggs whip to a higher volume and blend smoothly into the batter. Set them on the counter for 30 minutes, or place cold eggs in warm water for 5 minutes.
Butter. Use unsalted butter so you control the salt. In the cake it melts into warm milk, while in the frosting it must be soft enough to dent with a finger but still cool.
Flour. All-purpose flour gives a tender crumb that holds up to the rich frosting. Cake flour makes a slightly softer cake. Spoon the flour into the cup and level it rather than scooping.
Milk. Whole milk gives the best flavor and richness in both parts. Low fat milk works in a pinch, but skip skim milk because the frosting needs some fat to turn silky.
How to Make Lemon Layer Cake
1. Prepare the pans. Heat the oven to 350 degrees F. Grease two 8 inch round pans, line the bottoms with parchment paper, and whisk the flour, baking powder, and salt together.
2. Start the frosting base. Whisk the frosting flour and milk in a saucepan, then cook over medium heat while whisking until thick like pudding, about 4 minutes. Press plastic wrap onto the surface and let it cool while the cake bakes.
3. Warm the milk and butter. Heat the cake milk and butter gently until the butter melts and steam rises, then cool for 5 minutes and stir in the vanilla, oil, and lemon extract.
4. Whip the eggs. Beat the eggs with the sugar for 4 minutes until pale and thick, then beat in the lemon zest and juice.
5. Fold and bake. Stir in the warm milk mixture, fold in the flour mixture until no streaks remain, divide the batter between the pans, and bake for 25 to 30 minutes until a toothpick comes out clean.
6. Cool the layers. Let the cakes rest in the pans for 10 minutes, then turn them onto wire racks and cool completely, about 1 hour. Warm layers will melt the frosting.
7. Beat the frosting. Beat the soft butter for 3 minutes until pale, add the cooled flour mixture a spoonful at a time, then beat in the zest and juice until fluffy.
8. Assemble the cake. Spread frosting over one layer, set the second layer on top, and cover the top and sides with the remaining frosting.
How to Serve Lemon Layer Cake
Cut the cake into 12 slices with a hot knife wiped clean between cuts. For a bakery style dessert table, pair slices with a cinnamon streusel coffee cake and a slice of New York cheesecake, or add homemade strawberry cake for a two cake display. Fresh berries and a cup of tea keep the sweetness balanced, and soft double chocolate chip cookies round out a party platter.
How to Store and Reheat Lemon Layer Cake
Keep the frosted cake covered at room temperature for up to 3 days, or in the refrigerator for up to 5 days. This cake does not need reheating, but a 20 minute rest at room temperature softens the frosting and brings back the tender crumb. Freeze unfrosted layers wrapped tightly in plastic wrap for up to 3 months and thaw them overnight in the refrigerator.
Tips and Variations for Lemon Layer Cake
Zest first. Zest the lemons before cutting them in half because a whole lemon is far easier to grip.
Level the flour. Spoon flour into the measuring cup and level the top, because packed flour makes the cake dry.
Match temperatures. The cooled flour mixture and the soft butter should feel the same temperature. If the frosting looks split, chill it for 10 minutes and beat it again.
Use a toothpick. Ovens vary, so test the center of each layer at 25 minutes.
Trim the domes. If the tops dome, slice them level with a serrated knife before stacking for neat layers.
Add a filling. Spread a thin layer of lemon curd between the layers for a stronger citrus punch.
Make it ahead. Bake the layers a day early, wrap them well, and frost the next day for easier assembly.
Handle eggs safely. Skip tasting the raw batter because it contains raw eggs and flour. The Montana State University egg fact sheet explains basic egg handling at home.
Frequently Asked Questions About Lemon Layer Cake
Can I make lemon layer cake ahead of time?
Yes. Bake and wrap the layers up to 2 days ahead, then make the frosting and assemble on the day you plan to serve. The assembled cake also holds well in the refrigerator for 5 days.
How do I keep my lemon layer cake moist?
Measure the flour carefully, avoid overbaking, and cool the layers fully before wrapping. The milk and butter mixture also gives a soft crumb that stays tender for days.
Can I bake lemon layer cake in a 9×13 pan?
Yes. Pour the batter into a greased 9×13 inch pan and bake at 350 degrees F for 30 to 35 minutes. Use about two thirds of the frosting for a single layer.
Can I use bottled lemon juice?
Fresh juice tastes brighter, but bottled juice works if that is what you have. Zest is the real flavor driver, so always use fresh zest.
Why did my frosting split?
Splitting usually means the butter and the flour mixture were different temperatures. Chill the bowl for 10 minutes if it looks soupy, or warm the side of the bowl with a towel dipped in warm water if it looks curdled, then beat again.
Lemon Layer Cake with Fluffy Lemon Frosting
Equipment
- Two 8 inch round cake pans
- Hand mixer or stand mixer
- Medium saucepan
- Small saucepan
- Whisk
- Wire rack
- Parchment paper
Ingredients
Main Ingredients
- 2 cup all-purpose flour for the cake, cake flour also works
- 2 ½ tsp baking powder for the cake
- ¼ tsp salt for the cake
- 4 large eggs for the cake, at room temperature
- 1 ½ cup superfine sugar for the cake, granulated sugar also works
- ½ cup unsalted butter for the cake, 1 stick cut into cubes
- 1 cup whole milk for the cake
- 3 tsp vanilla extract for the cake
- 3 tsp vegetable oil for the cake
- 3 tbsp lemon zest for the cake, from about 2 lemons
- ⅓ cup lemon juice for the cake
- ¼ tsp lemon extract for the cake, optional
- 6 ½ tbsp all-purpose flour for the frosting
- 1 ⅓ cup whole milk for the frosting
- 1 ⅓ cup superfine sugar for the frosting
- 21 tbsp unsalted butter for the frosting, softened (2 sticks plus 5 tbsp)
- 3 tsp lemon zest for the frosting, from 1 lemon
- 4 tbsp lemon juice for the frosting
Instructions
Cooking
- Prep the pans. Preheat the oven to 350 degrees F. Grease two 8 inch round cake pans and line the bottoms with parchment paper. Whisk 2 cups flour, 2 1/2 tsp baking powder, and 1/4 tsp salt in a bowl and set aside.
- Cook the frosting base. Whisk 6 1/2 tbsp flour and 1 1/3 cups milk in a saucepan until smooth. Cook over medium heat, whisking constantly, for 3 to 5 minutes until thick like pudding. Press plastic wrap against the surface and cool to room temperature, about 45 minutes.
- Warm the butter and milk. In a small saucepan, heat 1 cup milk and the cubed butter over medium-low heat for about 3 minutes until the butter melts and the milk steams. Do not boil. Cool 5 minutes, then stir in the vanilla, oil, and lemon extract.
- Whip the eggs. Beat the eggs and 1 1/2 cups sugar on high speed for 4 minutes until pale and thick. Beat in 3 tbsp lemon zest and 1/3 cup lemon juice.
- Combine. Pour in the warm milk mixture on low speed, then fold in the flour mixture in two additions until no dry streaks remain. The batter will be thin.
- Bake. Divide the batter between the pans and bake 25 to 30 minutes until the tops are golden and a toothpick comes out clean.
- Cool. Cool in the pans 10 minutes, turn out onto wire racks, and cool completely, about 1 hour.
- Whip the frosting. Beat the softened butter on medium-high for 3 minutes until pale. Add the cooled flour mixture a spoonful at a time, then the zest and juice, and beat 2 more minutes until fluffy.
- Assemble. Spread frosting over one layer, top with the second layer, and frost the top and sides.
