Chocolate Fudge Cake (Ultra Moist + One-Bowl!)
CHOCOLATE FUDGE CAKE is a rich, super-fudgy chocolate cake topped with a silky chocolate ganache. It bakes up moist and dark, then finishes with a glossy, creamy frosting-style topping.
When you want deep chocolate flavor without complicated layers, this cake delivers. The batter comes together in a bowl, bakes in one pan, and the ganache turns it into a bakery-style dessert.
It’s the kind of cake that slices clean but still feels melt-in-your-mouth fudgy, especially after it cools.
Table of contents
Why You’ll Love This Recipe
- Big chocolate flavor from cocoa, coffee, and melted chocolate
- One-pan bake (no layering needed)
- Fudgy, moist crumb that stays soft for days
- Ganache topping looks fancy but is easy to make
- Great for birthdays, weekends, or any chocolate craving
Ingredients
Candy base
For the cake
- 7 tbsp butter (100 g)
- 3/4 cup dark chocolate chips (125 g / 4 oz)
- 1 1/3 cups granulated sugar (275 g)
- 1/4 cup + 1 tbsp vegetable oil (65 ml)
- 1 tsp vanilla extract
- 2 large eggs
- 3 tbsp unsweetened cocoa powder (17 g)
- 1 1/4 cups all-purpose flour (150 g)
- 1 tsp baking powder
- 1 cup hot water (250 ml)
- 1 tbsp coffee granules
Finish
For the ganache
- 1 cup heavy cream (250 ml)
- 1 1/2 cups dark chocolate chips (250 g)
Ingredient Notes & Substitutions
- Dark chocolate chips: Semi-sweet works too. If your chips are very sweet, the cake will taste a bit less “dark.”
- Coffee granules: Helps the chocolate taste deeper (it won’t taste like coffee). Swap with espresso powder, or skip it if needed.
- Cocoa powder: Natural unsweetened cocoa is great here. Dutch-process is also fine.
- Heavy cream: For the ganache, use heavy cream for the smoothest set. Half-and-half won’t thicken the same way.
- Butter + oil: This combo gives rich flavor (butter) and moist texture (oil). Don’t swap all oil for butter unless you’re okay with a slightly firmer crumb.
How to Make CHOCOLATE FUDGE CAKE
- Prep the pan and oven. Heat the oven to 350°F (177°C). Line an 8-inch round cake pan with parchment on the bottom and lightly grease the sides.
- Melt the chocolate and butter. In a heat-safe bowl, combine the butter and 3/4 cup chocolate chips. Melt until smooth (microwave in short bursts, stirring, or use a double boiler).
- Mix in sugar and wet ingredients. Stir in the sugar, oil, vanilla, and eggs until the mixture looks glossy and well blended.
- Add the dry ingredients. Sift or whisk in the cocoa powder, flour, and baking powder. Mix just until you don’t see dry streaks.
- Add the coffee water. Dissolve the coffee granules in the hot water, then pour it into the bowl. Stir until the batter is smooth and fluid.
- Bake. Pour the batter into the prepared pan. Bake until the center is set and a toothpick comes out with a few moist crumbs, about 30–40 minutes.
- Make the ganache. Heat the heavy cream until steaming (not boiling). Pour it over 1 1/2 cups chocolate chips, let sit 2 minutes, then stir until smooth.
- Thicken the ganache. Cover and let it cool until it’s spreadable (room temp thickening). Stir occasionally.
- Cool completely. Let the cake cool in the pan for 10–15 minutes, then turn it out onto a plate or rack and cool completely before frosting.
- Frost. Spread the ganache over the top (and sides if you want) using an offset spatula. Add swirls or texture on top.
Expert Tips
- Melt gently: Chocolate can seize if overheated. Use short microwave bursts and stir often.
- Mix the flour lightly: Once flour goes in, stir just until combined for the softest crumb.
- Hot water matters: It helps bloom the cocoa and makes the batter smooth and pourable.
- Check doneness the right way: Aim for a toothpick with moist crumbs, not totally clean, for a fudgier texture.
- Cool fully before ganache: Warm cake can melt the topping and make it slide.
- For faster ganache thickening: Chill briefly and stir every few minutes so it thickens evenly.
- Cleaner slices: Chill the frosted cake 30 minutes, then slice with a warm, wiped knife.
- Make it extra pretty: Finish with chocolate shavings, a dusting of cocoa, or a pinch of flaky salt (optional).
Storage & Freezing
- Fridge
- Store covered in the refrigerator for up to 5 days.
- Let slices sit at room temperature 15–25 minutes for the softest fudgy texture.
- Freezer
- Freeze slices (or the whole unfrosted cake) tightly wrapped for up to 2 months.
- If freezing frosted slices, freeze them on a tray until firm, then wrap.
- Thawing
- Thaw overnight in the fridge or for 1–2 hours at room temperature (wrapped to prevent drying out).
Variations
- Peanut butter ganache: Stir 2–3 tbsp peanut butter into the warm ganache.
- Mocha topping: Add 1 tsp espresso powder to the cream before pouring over chocolate.
- Orange-chocolate: Add 1–2 tsp orange zest to the batter.
- Nutty crunch: Fold 1/2 cup chopped toasted walnuts or pecans into the batter.
- Mini cakes: Bake in a muffin tin (reduce bake time; start checking early).
CHOCOLATE FUDGE CAKE
Ultra-rich chocolate cake with a deep cocoa flavor and a smooth chocolate ganache you can spread in swirls.
Ingredients
Equipment
Method
- Heat oven to 350°F (177°C). Line the bottom of an 8-inch round cake pan with parchment and lightly grease the sides.
- In a heat-safe bowl, melt the butter and 3/4 cup dark chocolate chips until smooth.
- Stir in sugar, oil, vanilla, and eggs until glossy and well combined.
- Sift or whisk in cocoa powder, flour, and baking powder. Mix just until no dry streaks remain.
- Dissolve coffee granules in hot water, then pour into the batter. Stir until smooth.
- Pour batter into the prepared pan and bake 30–40 minutes, until the center is set and a toothpick comes out with moist crumbs.
- Cool 10–15 minutes in the pan, then turn out and cool completely.
- For ganache, heat heavy cream until steaming. Pour over 1 1/2 cups dark chocolate chips, let sit 2 minutes, then stir until smooth.
- Let ganache cool until thick and spreadable, stirring occasionally.
- Spread ganache over the cooled cake and create swirls. Chill briefly for cleaner slices if desired.
Nutrition
Video
Notes
- Coffee boosts chocolate flavor without making it taste like coffee; skip it and use plain hot water if needed.
- Don’t overmix after adding flour to keep the crumb soft.
- Let ganache cool and thicken before spreading so it doesn’t run.
- Swap dark chocolate chips for semi-sweet if that’s what you have.
- For super-clean slices, chill the frosted cake 30 minutes and slice with a warm knife.
Tried this recipe?
Let us know how it was!FAQs
Can I make this cake without coffee ?
Yes. Skip the coffee granules and use plain hot water.
What pan size works best ?
An 8-inch round pan is a great fit. A 9-inch pan will bake faster and be slightly thinner.
How do I know the cake is done ?
Look for a set center and a toothpick that comes out with a few moist crumbs (not wet batter).
Why did my ganache look thin ?
It likely needs more cooling time. Let it sit and stir occasionally until it turns spreadable.
Can I frost the cake while ganache is still warm ?
Wait until it thickens and the cake is fully cooled, or the topping can run and soak in.
How do I get clean slices ?
Chill the cake briefly, then use a warm knife and wipe between cuts.
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Estimated reading time: 8 minutes
