How do I stop the layers from mixing?

Allow all cake layers to cool completely before stacking․ Spread a thick‚ stiff layer of buttercream between cake layers․ Chill the crumb-coated cake․ Never stack warm cake layers‚ as the layers and frosting will mix at the edges where they are stacked․

Why is my vanilla sponge yellow?

Whole eggs and yellow butter give a yellow color to vanilla sponge cakes․ Replace 1 whole egg in the recipe with an egg white and beat the butter for at least 7 minutes to reduce its yellow color․ Adding pure vanilla extract can help prevent a yellow color in the cake․

What temperature should the ganache be?

Try to heat to 90°F (32°C)․ It should pour slowly‚ like syrup‚ and coat a spoon thickly for a few seconds․

How do I cut clean cake slices?

Immerse a thin serrated knife in hot water․ Wash and dry the knife after each cut to avoid transferring stains from chocolate and strawberries to other slices․

What pans work best for this cake?

Bake the cake in three 8-inch (20cm) round pans with straight sides․ Straight sides will leave fewer gaps when layering the cake and make it easier to frost․ I use a cake board for stacking․ I use a rotating cake stand and a large metal offset spatula to frost the cake․ A plastic squeeze bottle or small measuring cup with a spout can be used to decorate the edge of the cake with a drip․

Neapolitan Cake with Chocolate Drip and Strawberry Center

By Ruby ChenOct 21, 2026

Prep

60 min

Cook

35 min

Total

95 min

Servings

Level

Hard

Jump to recipe

This Neapolitan‌ cake feed 12‌ people․ Assembly‌ and other‌ steps are straightforward and include making three types of sponge cake and a drip․ The sponges are made‌ in the following order: chocolate sponge‌ cake‚ strawberry sponge cake‚ and vanilla sponge cake․ After assembly‚ the bottom layer of cake is chocolate‚ the middle layer is strawberry‚ and the‌ top‌ layer is vanilla․ The cake is decorated with white‌ frosting‚ a chocolate drip‚ and‌ a strawberry slice․

Neapolitan Cake with Chocolate Drip and Strawberry Center

Dutch-process cocoa powder and brewed coffee are added to the‌ sponge cake batter for‌ the chocolate layer․ Brewed coffee is added to the chocolate‌ layer batter to intensify cocoa flavor when‌ baking․ Fresh strawberries are pureed and cooked before‌ being used in the strawberry layer to reduce moisture in‌ the baked cake․ Clear vanilla extract is added to the top sponge layer and frosting‌ to keep‌ them pale․ Cake flour is‌ used in all layers to give‌ the cake a fine texture․

Room-temperature eggs and dairy products keep‌ the cake‌ batter from curdling․ I use a serrated knife to cut the sponge cakes to‌ 1-inch (2․5cm) slices after they cool and stack them on a cake board with‌ stiff buttercream frosting to prevent the layers from bleeding into each other․ A cake turntable and long‚‌ narrow spatula can help prevent cake crumbs from falling‌ into the buttercream topping․

After adding‌ a thin crumb‌ coat to the cake‚ it is chilled for 20 minutes and decorated with a second layer of buttercream․ Ganache is cooled to‌ 90°F (32°C) and still drips from a spoon but feels‌ warm when touched‚ it is poured over the cake․ Tips for slicing cake include‌ using a long serrated knife and warming it in hot‌ water between cuts․

Why you'll love this recipe

Separate layers of sponge cake make it easy to see the three sections when you slice the‌ cake․
A crumb coat and 20 minutes of chilling can keep crumbs from showing under a white layer of frosting on baked goods․
Strawberry reduction preserves strawberry flavor in a concentrated form without impacting the texture of the cake filling between layers․
The bottom layer has a faint chocolate taste․
Ganache at 90°F (32°C) can be poured over other types of icing․
A small piece of strawberry and pile of pink buttercream are added to the cake but do not cover the drip․

Instructions

Whisk the all-purpose flour, granulated sugar, and Dutch-processed cocoa in a large mixing bowl.

Combine the buttermilk and hot coffee in a separate jug.

Fold the coffee mixture into the chocolate dry ingredients until you have a smooth, thin batter, then stir in the baking soda.

Pour the chocolate batter into a prepared pan and bake at 350°F (175°C) for 30-35 minutes, until the center springs back when lightly touched.

Cream the butter and granulated sugar for the strawberry layer until light and fluffy.

Mix in the cooled strawberry reduction and 1 drop of pink gel food coloring.

Add the cake flour and whole milk in alternating batches, then bake the strawberry layer at the same temperature as the chocolate layer until golden.

Whisk the egg whites to soft peaks.

Fold the whipped egg whites into the vanilla batter made with cake flour, sugar, and clear vanilla extract, then bake until a toothpick comes out clean.

Cool all three sponges completely, then level their tops with a serrated knife until each layer is 1 inch (2.5cm) thick.

Beat the butter for the buttercream on high speed for at least 5-7 minutes, until it turns from yellow to almost white.

Slowly sift in the powdered sugar and add the heavy cream. Add milk one teaspoon at a time only if the frosting is too stiff to spread.

Place the chocolate sponge on a cake board and spread on a thick, even layer of buttercream.

Add the strawberry layer, spread on more buttercream, then top with the vanilla sponge.

Apply a thin crumb coat over the cake and chill for 20 minutes.

Cover the chilled cake with a final thick layer of buttercream and smooth it with an offset spatula.

Heat the heavy cream for the ganache until just simmering, then pour it over the chopped dark chocolate.

Let the ganache sit for 2 minutes, then stir from the center outward until shiny and smooth.

Cool the ganache to approximately 90°F (32°C), then pour it around the cake edges to form drips.

Finish the cake with a dollop of pink buttercream tinted with leftover strawberry reduction and a fresh strawberry wedge in the center.

FAQ

You can use strawberry jam instead of the reduction․ Sugar and pectin in the jam can change the texture of the cake․ The reduction will have a more intense strawberry flavor and less sweetness than the jam․

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Desserts American Special Occasions Party Baking

Neapolitan Cake with Chocolate Drip and Strawberry Center

Name: Neapolitan Cake with Chocolate Drip and Strawberry Center
Prep time: 60 min
Cook time: 35 min
Total time: 95 min
Yield: 12 slices
Ingredients: 1 1/2 cups all-purpose flour (190g, for the chocolate layer); 1 1/2 cups granulated sugar (300g for the chocolate layer, plus 1 cup (200g) for the strawberry layer); 1/2 cup Dutch-processed cocoa powder (45g); 3/4 cup buttermilk (180ml, room temperature); 1/2 cup hot brewed coffee (120ml); 1 tsp baking soda (5g); 1/2 cup unsalted European-style butter (115g, for the strawberry layer, plus 2 cups (450g) for the buttercream); 1/4 cup strawberry reduction (60ml, cooled); 1 drop pink gel food coloring (optional); 1 1/4 cups cake flour (155g for the strawberry layer, plus 1.5 cups (190g) for the vanilla layer); 1/2 cup whole milk (120ml); 3 large egg whites; clear vanilla extract; 6 cups powdered sugar (750g); 2 tbsp heavy cream (30ml for the buttercream, plus 0.5 cup (120ml) for the ganache); 4 oz dark chocolate (115g, 60% cacao, chopped); 1 small fresh strawberry wedge (for garnish)

By Ruby ChenOct 21, 2026

Prep

60 min

Cook

35 min

Total

95 min

Servings

Level

Hard

Jump to recipe

Why you'll love this recipe

Separate layers of sponge cake make it easy to see the three sections when you slice the‌ cake․
A crumb coat and 20 minutes of chilling can keep crumbs from showing under a white layer of frosting on baked goods․
Strawberry reduction preserves strawberry flavor in a concentrated form without impacting the texture of the cake filling between layers․
The bottom layer has a faint chocolate taste․
Ganache at 90°F (32°C) can be poured over other types of icing․
A small piece of strawberry and pile of pink buttercream are added to the cake but do not cover the drip․

Ingredients

Servings12

•1 ½ cups all-purpose flour (190g, for the chocolate layer)
•1 ½ cups granulated sugar (300g for the chocolate layer, plus 1 cup (200g) for the strawberry layer)
•½ cup Dutch-processed cocoa powder (45g)
•¾ cup buttermilk (180ml, room temperature)
•½ cup hot brewed coffee (120ml)
•1 tsp baking soda (5g)
•½ cup unsalted European-style butter (115g, for the strawberry layer, plus 2 cups (450g) for the buttercream)
•¼ cup strawberry reduction (60ml, cooled)
•1 drop pink gel food coloring (optional)
•1 ¼ cups cake flour (155g for the strawberry layer, plus 1.5 cups (190g) for the vanilla layer)
•½ cup whole milk (120ml)
•3 large egg whites
•clear vanilla extract
•6 cups powdered sugar (750g)
•2 tbsp heavy cream (30ml for the buttercream, plus 0.5 cup (120ml) for the ganache)
•4 oz dark chocolate (115g, 60% cacao, chopped)
•1 small fresh strawberry wedge (for garnish)

Instructions

1
Whisk the all-purpose flour, granulated sugar, and Dutch-processed cocoa in a large mixing bowl.
2
Combine the buttermilk and hot coffee in a separate jug.
3
Fold the coffee mixture into the chocolate dry ingredients until you have a smooth, thin batter, then stir in the baking soda.
4
Pour the chocolate batter into a prepared pan and bake at 350°F (175°C) for 30-35 minutes, until the center springs back when lightly touched.
5
Cream the butter and granulated sugar for the strawberry layer until light and fluffy.
6
Mix in the cooled strawberry reduction and 1 drop of pink gel food coloring.
7
Add the cake flour and whole milk in alternating batches, then bake the strawberry layer at the same temperature as the chocolate layer until golden.
8
Whisk the egg whites to soft peaks.
9
Fold the whipped egg whites into the vanilla batter made with cake flour, sugar, and clear vanilla extract, then bake until a toothpick comes out clean.
10
Cool all three sponges completely, then level their tops with a serrated knife until each layer is 1 inch (2.5cm) thick.
11
Beat the butter for the buttercream on high speed for at least 5-7 minutes, until it turns from yellow to almost white.
12
Slowly sift in the powdered sugar and add the heavy cream. Add milk one teaspoon at a time only if the frosting is too stiff to spread.
13
Place the chocolate sponge on a cake board and spread on a thick, even layer of buttercream.
14
Add the strawberry layer, spread on more buttercream, then top with the vanilla sponge.
15
Apply a thin crumb coat over the cake and chill for 20 minutes.
16
Cover the chilled cake with a final thick layer of buttercream and smooth it with an offset spatula.
17
Heat the heavy cream for the ganache until just simmering, then pour it over the chopped dark chocolate.
18
Let the ganache sit for 2 minutes, then stir from the center outward until shiny and smooth.
19
Cool the ganache to approximately 90°F (32°C), then pour it around the cake edges to form drips.
20
Finish the cake with a dollop of pink buttercream tinted with leftover strawberry reduction and a fresh strawberry wedge in the center.