The Ultimate Chocolate Raspberry Fudge Cake
This is a proper chocolate raspberry fudge cake - two deeply moist cocoa layers with a fresh raspberry filling and a glossy chocolate ganache poured over the top. Hot coffee in the batter blooms the cocoa for a richer chocolate hit, and the tart raspberries cut clean through all that fudgy richness.
Why you'll love this
- An exceptionally moist, fudgy crumb from oil, sour cream and hot coffee
- Hot coffee blooms the cocoa for a deeper, darker chocolate flavour, not a coffee one
- A fresh raspberry layer that brightens and balances the rich chocolate
- A silky pour-over ganache for a showstopping, bakery-style finish
Key ingredients & swaps
- Dutch-processed cocoa — the chocolate base and dark colour; Dutch cocoa gives a deeper, smoother flavour without the sharp acidic bite of natural cocoa, and whisking it with the dry ingredients removes lumps.
- Hot coffee — the secret to depth - hot liquid blooms the cocoa and intensifies the chocolate without leaving a coffee taste; use hot water or milk if you prefer, but keep it hot.
- Vegetable oil and sour cream — the moisture team; oil keeps the crumb soft even straight from the fridge, while sour cream adds richness and a little acidity that tenderises and helps it rise.
- Fresh raspberries with lemon juice — the bright filling; a squeeze of lemon and a touch of sugar lift the berries, and a spoon of jam thickens it so it doesn't run between the layers.
- Dark or semi-sweet chocolate — the body of the ganache; chop it finely so it melts evenly in the hot cream into a smooth, pourable glaze.
- Heavy cream — melts the chocolate into ganache; heat it to just below a boil, pour over the chocolate, wait a minute, then stir from the centre out until glossy.
How to make it (step by step)
-
1Prep and combine dry
Heat the oven to 350F (175C) and grease and line two 8-inch pans. Whisk the flour, cocoa, baking powder, baking soda and salt together so the leaveners and cocoa are evenly dispersed.
-
2
Mix the wet
Whisk the sugar, oil and room-temperature eggs until smooth, then mix in the sour cream and vanilla. Room-temperature eggs blend in more evenly for a finer crumb.
-
3
Bloom with hot coffee
Stir the dry into the wet, then mix in the hot coffee last. The batter will look thin and pourable - that is exactly right, and it bakes into the moistest crumb.
-
4
Bake and cool
Divide between the pans and bake 33 to 35 minutes, until a toothpick comes out with a few moist crumbs, not wet batter. Cool 10 minutes in the pans, then turn out onto a rack and cool completely before filling.
-
5
Make the filling
Crush the raspberries with the lemon juice, jam and a little sugar to taste. Leave it slightly chunky for texture and let it sit so the flavours come together.
-
6
Make the ganache
Heat the cream to just below boiling, pour it over the finely chopped chocolate and butter, and let it sit undisturbed for a minute. Then stir gently from the middle outwards until it is smooth and glossy.
-
7
Fill and frost
Set one fully cooled layer down, spread the raspberry filling over it, and top with the second layer. Pour the ganache over the top and ease it gently to the edges so it drips down the sides.
-
8
Chill to set
Refrigerate 30 to 60 minutes so the ganache firms to a sliceable set. Finish with fresh raspberries, then slice with a warm, clean knife for neat layers.
Pro tips
- Don't panic at the thin batter - the hot coffee and oil are what make it so moist; a thick batter would bake drier.
- Check the cakes a few minutes early and pull them at moist crumbs on the toothpick; overbaking is the quickest way to lose the fudgy texture.
- Let the ganache cool and thicken slightly before pouring so it coats in a silky, drippy layer rather than running straight off.
Variations
- Chocolate-raspberry overload: fold a handful of chocolate chips into the batter or press fresh raspberries into the filling.
- Coffee-free: swap the hot coffee for hot water or hot milk - you still get a moist crumb, just a touch less depth.
- Sheet cake: bake in a single 9x13 pan, then spread filling and ganache on top for an easy crowd version.
Storage & freezing
Keep covered in the fridge for up to 4 to 5 days; bring slices to room temperature before serving so the ganache softens, or freeze the unfrosted layers wrapped tightly for up to 2 months.
Recipe
The Ultimate Chocolate Raspberry Fudge Cake
Ingredients
- For the Cake:
- 1 ¾ cups all-purpose flour
- ¾ cup unsweetened cocoa powder (Dutch-processed preferred)
- 1 ½ tsp baking powder
- 1 tsp baking soda
- ½ tsp salt
- 1 ½ cups granulated sugar
- ¾ cup vegetable oil
- 2 large eggs, room temperature
- 1 cup sour cream (or Greek yogurt)
- 1 tsp pure vanilla extract
- 1 cup hot coffee (or hot water/milk alternative)
- For the Raspberry Filling:
- 1 cup fresh or thawed frozen raspberries
- 2 tbsp raspberry jam (optional, for extra richness)
- 1 tbsp lemon juice
- 1 tsp sugar (optional, to taste)
- For the Chocolate Ganache:
- 1 cup heavy cream
- 8 oz dark or semi-sweet chocolate, finely chopped
- 2 tbsp unsalted butter
Instructions
- Pre-heat the oven at 350degF (or 175degC). Prepare two 8-inch pans by greasing and lining them with parchment paper.
- Combine dry ingredients. In large bowl, whisk together flour, cocoa powder, baking powder and baking soda.
- Combine wet ingredients in another bowl: Combine sugar, oil and eggs. Whisk until smooth.
- Pour hot liquids: Pour the hot water or coffee. The batter may look thin, but this is perfect.
- Mix: Poure le mélange humide dans le mélange sec. Stir until just combined; don't overmix.
- Bake : Dividing the batter into pans, bake for 33 to 35 minutes until a toothpick is moist with crumbs.
- Cool down: Allow cakes to rest for 10 minutes before transferring them to a cooling rack.
- Prepare filling: Combine jam, lemon juice, and raspberries. If needed, adjust sweetness.
- To make ganache, heat cream to just below boiling point and pour it over the chocolate and butter. Let it rest for 1 minute and then stir until glossy.
- Assemble Spread raspberry filling on one layer of cake, then top it with the other layer.
- Frost: Pour ganache over the top and smooth gently
- Chill out: Refrigerate 30-60 minutes for a set.
- Garnish the dish: Top with fresh raspberries, or any toppings you choose, then slice and enjoy.
Tips & notes
- For a smoother batter, use eggs at room temperature and sourcream .
- Check the cake early so that it doesn't dry out.
- Pour the ganache after it has cooled to achieve a silky, drippy finish.
- Slice the layers neatly by chilling slightly.
Watch how to make it
Nutrition · per serving (estimate)
Made this recipe?
Tap the stars to leave your rating — it helps other home cooks.
Frequently asked questions
Will the coffee make my cake taste like coffee?
No. The hot coffee blooms the cocoa and deepens the chocolate flavour without leaving a detectable coffee taste. If you would rather skip it, hot water or hot milk works, just with slightly less depth.
My cake batter is really thin - did I do something wrong?
No, a thin, pourable batter is exactly what you want here. The extra liquid from the coffee, oil and sour cream is what gives the cake its signature moist, fudgy crumb.
How do I know when the layers are baked?
Insert a toothpick into the centre - it should come out with a few moist crumbs clinging to it, not wet batter. Pull them as soon as they reach that point, since overbaking dries out the crumb.
Why did my ganache turn out grainy or split?
Usually the cream was too hot or it was stirred too soon or too vigorously. Heat the cream to just below a boil, let it sit on the chopped chocolate for a minute, then stir gently from the centre outwards until smooth.
Can I use frozen raspberries for the filling?
Yes. Thaw and drain them first so the extra liquid doesn't make the filling runny, then crush with the lemon and a little jam to thicken it. Fresh and frozen both work well.
Can I make this cake ahead?
Yes. Bake the layers a day ahead and keep them wrapped, or freeze them for up to two months. Assemble with the filling and ganache on the day, then chill briefly to set before serving.
Leave a review