I made this classic birthday cake into the kind of showstopping dessert that looks made for candlelight, crystal glasses, and a very special guest list. One slice reveals why this flavour pairing never goes out of style.

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I’m obsessed with this Raspberry Chocolate Layer Cake because it hits that rich, glossy, dramatic dessert spot without tasting too serious. I love the way unsweetened cocoa powder brings deep chocolate intensity, then fresh raspberries cut through with sharp, juicy contrast.

It feels like birthday cake dressed for a luxury dinner party, but still wildly fun to eat. And that is exactly my kind of dessert.

Big slices, dark layers, bright berry streaks, messy forks. But not messy in a sad way.

In the best, can’t-stop-going-back way. I adore the chocolate-raspberry combo because it always tastes expensive, bold, and alive.

Ingredients

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Flour gives the cake its soft structure, so it doesn’t fall apart.
Sugar keeps things sweet, tender, and honestly kind of addictive.
Cocoa powder brings that deep chocolate vibe you’re here for.
Eggs help everything hold together and bake up rich.
Buttermilk makes the crumb soft, moist, and a little tangy.
Oil keeps the layers extra moist, even after chilling.
Vanilla rounds out the chocolate so it tastes warmer.
Hot coffee makes the cocoa taste bolder, not like coffee.
Raspberries add tart, juicy pops that cut the richness.
Lemon juice brightens the filling so it’s not flat.
Cornstarch thickens the berries into a sliceable, jammy layer.
Buttercream brings the creamy, fluffy chocolate frosting everyone sneaks bites of.
Ganache makes it glossy, dramatic, and a little bakery-level.
Plus fresh raspberries on top make it look pretty fast.
Basically, chocolate curls are the fun, fancy finish.

Ingredient Quantities

2 1/4 cups (280 g) all purpose flour

1 3/4 cups (350 g) granulated sugar

3/4 cup (75 g) unsweetened cocoa powder, sifted

2 teaspoons baking soda

1 1/2 teaspoons baking powder

1 teaspoon fine salt

3 large eggs, room temperature

1 1/4 cups (300 ml) buttermilk, room temperature

1/2 cup (120 ml) vegetable oil

2 teaspoons vanilla extract

1 1/4 cups (300 ml) hot brewed coffee or hot water

12 ounces (340 g) fresh or frozen raspberries

1/3 cup (65 g) granulated sugar for raspberry filling

1 tablespoon lemon juice for raspberry filling

2 tablespoons cornstarch to thicken raspberry filling

1/2 cup (160 g) raspberry jam or preserves, optional for extra jammy layer

1 1/2 cups (340 g) unsalted butter, softened for chocolate buttercream

4 cups (480 g) powdered sugar for buttercream

3/4 cup (75 g) unsweetened cocoa powder for buttercream, sifted

1/4 cup (60 ml) heavy cream or milk for buttercream, plus more if needed

2 teaspoons vanilla extract for buttercream

Pinch of fine salt for buttercream

12 ounces (340 g) semi sweet chocolate for ganache, chopped, optional

1 1/2 cups (360 ml) heavy cream for ganache, optional

6 tablespoons (85 g) unsalted butter for glossy ganache, optional

Fresh raspberries for decoration

Chocolate shavings or curls for decoration

How to Make this

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1. Preheat oven to 350 F (175 C). Grease and line two 9 inch round cake pans with parchment, or three 8 inch pans if preferred, and lightly flour the sides.

2. Whisk together 2 1/4 cups (280 g) all purpose flour, 1 3/4 cups (350 g) granulated sugar, 3/4 cup (75 g) sifted unsweetened cocoa powder, 2 teaspoons baking soda, 1 1/2 teaspoons baking powder, and 1 teaspoon fine salt in a large bowl until evenly combined.

3. In a separate bowl whisk 3 large room temperature eggs, 1 1/4 cups (300 ml) buttermilk, 1/2 cup (120 ml) vegetable oil, and 2 teaspoons vanilla extract. Pour the wet mixture into the dry ingredients and mix until just combined, then slowly stir in 1 1/4 cups (300 ml) hot brewed coffee or hot water until batter is smooth and pourable.

4. Divide batter between prepared pans and bake until a toothpick inserted into the center comes out with a few moist crumbs, about 30 to 35 minutes for 9 inch pans or 25 to 30 minutes for 8 inch pans. Cool in pans 10 minutes, then turn out onto a wire rack to cool completely.

5. While cakes cool, make the raspberry filling: combine 12 ounces (340 g) fresh or frozen raspberries, 1/3 cup (65 g) granulated sugar, and 1 tablespoon lemon juice in a small saucepan. Mix 2 tablespoons cornstarch with a little cold water to make a slurry and stir into the raspberries. Cook over medium heat, stirring, until the mixture bubbles and thickens, then remove from heat and cool completely. Stir in 1/2 cup (160 g) raspberry jam or preserves if using for extra jammy texture.

6. Make the chocolate buttercream: beat 1 1/2 cups (340 g) softened unsalted butter until creamy, then gradually add 4 cups (480 g) powdered sugar and 3/4 cup (75 g) sifted unsweetened cocoa powder on low speed. Add 1/4 cup (60 ml) heavy cream or milk, 2 teaspoons vanilla extract, and a pinch of fine salt, then increase speed and beat until light and fluffy. Add more cream if needed to reach spreading consistency.

7. Optional ganache: heat 1 1/2 cups (360 ml) heavy cream until simmering, pour over 12 ounces (340 g) chopped semi sweet chocolate and let sit 2 minutes, then stir until smooth. Whisk in 6 tablespoons (85 g) unsalted butter for a glossy finish. Cool until pourable but not too hot.

8. Trim cake tops if necessary to level. Place first layer on a serving plate, spread a thin layer of buttercream, then spoon or pipe an even layer of the cooled raspberry filling. Repeat with remaining layers, finishing with the top layer of cake.

9. Crumb coat the assembled cake with a thin layer of buttercream and chill 20 to 30 minutes to set. Apply a final smooth layer of buttercream. If using ganache, pour cooled ganache over the center and gently spread to drip down the sides.

10. Decorate with fresh raspberries and chocolate shavings or curls. Chill briefly to set the glaze if used, then bring to room temperature before serving for best flavor.

Equipment Needed

1. Oven
2. Two 9 inch round cake pans (or three 8 inch pans), parchment paper and cooking spray or butter for greasing
3. Large mixing bowls and a medium bowl for wet ingredients
4. Electric mixer or stand mixer with paddle or whisk attachment (or a sturdy hand whisk)
5. Measuring cups and spoons and a kitchen scale for accuracy
6. Whisk and silicone spatula for folding and scraping
7. Saucepan and wooden spoon for the raspberry filling
8. Wire cooling rack
9. Offset spatula or bench scraper for spreading buttercream and smoothing the cake

FAQ

Can I use regular milk instead of buttermilk? Yes. For 1 1/4 cups buttermilk, stir 1 1/4 tablespoons white vinegar or lemon juice into 1 1/4 cups milk and let sit 5 minutes, or use plain yogurt or soured milk thinned with a little water.

Can I use frozen raspberries for the filling? Yes. Use frozen raspberries without thawing or thaw and drain excess liquid first. If very watery, cook a bit longer with the cornstarch to reach desired thickness.

How do I prevent the cake from being dry? Do not overbake; test with a toothpick that comes out with a few moist crumbs. Use room temperature wet ingredients and the hot coffee to enhance moisture and chocolate flavor. Brush layers with a little simple syrup or warm jam if desired.

How far ahead can I assemble the cake? You can bake the layers up to 2 days ahead and store wrapped in the refrigerator. Assemble and frost the cake the day you plan to serve for best texture and appearance. Fully assembled cake keeps 2 to 3 days refrigerated.

Can I skip the ganache and just use buttercream? Yes. The chocolate buttercream alone is rich and stable. Ganache is optional if you want a glossy drip or extra chocolate layer; omit it for a simpler finish.

How do I get a smooth chocolate buttercream? Cream the butter until very pale and fluffy before adding sifted powdered sugar and cocoa. Add cream a little at a time to reach spreadable consistency and beat on medium high for 2 to 3 minutes for a silky finish. Adjust salt and vanilla to balance sweetness.

Raspberry Chocolate Layer Cake Recipe Substitutions and Variations

Buttermilk
- Milk plus 1 tablespoon lemon juice or white vinegar per cup, let sit 5 minutes
- Plain yogurt thinned with milk to a pourable consistency
- Sour cream diluted with a little milk or water
Vegetable oil
- Melted unsalted butter for richer flavor (use same volume)
- Melted coconut oil for a neutral baking fat, same volume
- Unsweetened applesauce for lower fat, use 3 4ths the oil amount and reduce baking time slightly
Unsalted butter for buttercream
- Salted butter, omit or reduce added salt in recipe
- Half butter half vegetable shortening for stiffer, more stable frosting
- Vegan butter or solid coconut oil for a dairy free option, note texture and flavor will differ
Fresh raspberries
- Thawed frozen raspberries drained slightly, use as listed
- Blackberries or strawberries for a similar tart sweet filling
- Raspberry jam or preserves in place of fresh fruit for an extra jammy layer

Pro Tips

1. Let the cakes cool completely before filling and frosting. Warm cakes release steam and can make the buttercream runny and the raspberry filling weep. If you are short on time, chill the layers briefly in the fridge to firm them up before assembling.

2. Fold the raspberry filling gently into itself as it cools so it stays chunky but spreadable. If your fruit was frozen, thaw and drain excess liquid first, then cook down until thick; this prevents a soggy middle.

3. For a silkier buttercream, beat the butter very well first until pale and airy before adding the sugar and cocoa. Start the mixer on low to avoid a sugar cloud, then increase speed to whip in air for lightness. If the frosting is too stiff, add cream a teaspoon at a time until you reach a smooth, pipeable texture.

4. Use hot coffee for the batter to deepen the chocolate flavor, but let it cool slightly so it does not cook the eggs when mixed in. Pour the coffee in slowly and mix just until smooth to keep the cake tender.

5. If you want neat layer edges, chill the assembled cake after the crumb coat and score the top very lightly with a knife to guide your final frosting. For a glossy finish, pour ganache when it is warm but not hot so it flows evenly without melting the buttercream.

Raspberry Chocolate Layer Cake Recipe

Recipe by Samantha Dalling

0.0 from 0 votes

Servings

servings

Calories

796

kcal

Equipment: 1. Oven
2. Two 9 inch round cake pans (or three 8 inch pans), parchment paper and cooking spray or butter for greasing
3. Large mixing bowls and a medium bowl for wet ingredients
4. Electric mixer or stand mixer with paddle or whisk attachment (or a sturdy hand whisk)
5. Measuring cups and spoons and a kitchen scale for accuracy
6. Whisk and silicone spatula for folding and scraping
7. Saucepan and wooden spoon for the raspberry filling
8. Wire cooling rack
9. Offset spatula or bench scraper for spreading buttercream and smoothing the cake

Ingredients

2 1/4 cups (280 g) all purpose flour
1 3/4 cups (350 g) granulated sugar
3/4 cup (75 g) unsweetened cocoa powder, sifted
2 teaspoons baking soda
1 1/2 teaspoons baking powder
1 teaspoon fine salt
3 large eggs, room temperature
1 1/4 cups (300 ml) buttermilk, room temperature
1/2 cup (120 ml) vegetable oil
2 teaspoons vanilla extract
1 1/4 cups (300 ml) hot brewed coffee or hot water
12 ounces (340 g) fresh or frozen raspberries
1/3 cup (65 g) granulated sugar for raspberry filling
1 tablespoon lemon juice for raspberry filling
2 tablespoons cornstarch to thicken raspberry filling
1/2 cup (160 g) raspberry jam or preserves, optional for extra jammy layer
1 1/2 cups (340 g) unsalted butter, softened for chocolate buttercream
4 cups (480 g) powdered sugar for buttercream
3/4 cup (75 g) unsweetened cocoa powder for buttercream, sifted
1/4 cup (60 ml) heavy cream or milk for buttercream, plus more if needed
2 teaspoons vanilla extract for buttercream
Pinch of fine salt for buttercream
12 ounces (340 g) semi sweet chocolate for ganache, chopped, optional
1 1/2 cups (360 ml) heavy cream for ganache, optional
6 tablespoons (85 g) unsalted butter for glossy ganache, optional
Fresh raspberries for decoration
Chocolate shavings or curls for decoration

Directions

Preheat oven to 350 F (175 C). Grease and line two 9 inch round cake pans with parchment, or three 8 inch pans if preferred, and lightly flour the sides.
Whisk together 2 1/4 cups (280 g) all purpose flour, 1 3/4 cups (350 g) granulated sugar, 3/4 cup (75 g) sifted unsweetened cocoa powder, 2 teaspoons baking soda, 1 1/2 teaspoons baking powder, and 1 teaspoon fine salt in a large bowl until evenly combined.
In a separate bowl whisk 3 large room temperature eggs, 1 1/4 cups (300 ml) buttermilk, 1/2 cup (120 ml) vegetable oil, and 2 teaspoons vanilla extract. Pour the wet mixture into the dry ingredients and mix until just combined, then slowly stir in 1 1/4 cups (300 ml) hot brewed coffee or hot water until batter is smooth and pourable.
Divide batter between prepared pans and bake until a toothpick inserted into the center comes out with a few moist crumbs, about 30 to 35 minutes for 9 inch pans or 25 to 30 minutes for 8 inch pans. Cool in pans 10 minutes, then turn out onto a wire rack to cool completely.
While cakes cool, make the raspberry filling: combine 12 ounces (340 g) fresh or frozen raspberries, 1/3 cup (65 g) granulated sugar, and 1 tablespoon lemon juice in a small saucepan. Mix 2 tablespoons cornstarch with a little cold water to make a slurry and stir into the raspberries. Cook over medium heat, stirring, until the mixture bubbles and thickens, then remove from heat and cool completely. Stir in 1/2 cup (160 g) raspberry jam or preserves if using for extra jammy texture.
Make the chocolate buttercream: beat 1 1/2 cups (340 g) softened unsalted butter until creamy, then gradually add 4 cups (480 g) powdered sugar and 3/4 cup (75 g) sifted unsweetened cocoa powder on low speed. Add 1/4 cup (60 ml) heavy cream or milk, 2 teaspoons vanilla extract, and a pinch of fine salt, then increase speed and beat until light and fluffy. Add more cream if needed to reach spreading consistency.
Optional ganache: heat 1 1/2 cups (360 ml) heavy cream until simmering, pour over 12 ounces (340 g) chopped semi sweet chocolate and let sit 2 minutes, then stir until smooth. Whisk in 6 tablespoons (85 g) unsalted butter for a glossy finish. Cool until pourable but not too hot.
Trim cake tops if necessary to level. Place first layer on a serving plate, spread a thin layer of buttercream, then spoon or pipe an even layer of the cooled raspberry filling. Repeat with remaining layers, finishing with the top layer of cake.
Crumb coat the assembled cake with a thin layer of buttercream and chill 20 to 30 minutes to set. Apply a final smooth layer of buttercream. If using ganache, pour cooled ganache over the center and gently spread to drip down the sides.
Decorate with fresh raspberries and chocolate shavings or curls. Chill briefly to set the glaze if used, then bring to room temperature before serving for best flavor.

Notes

Below you’ll find my best estimate of this recipe’s nutrition facts. Treat the numbers as a guide rather than a rule—great food should nourish both body and spirit. Figures are approximate, and the website owner assumes no liability for any inaccuracies in this recipe.