Self-Saucing Chocolate Fudge Cake

PREP

15 mins

|

COOK

40 mins

|

SERVES

8

|

DIFFICULTY

Easy

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Chef Jack Ovens
Qualified Chef · 1.63M Subscribers
Updated August 2026

This cake does something a bit magic in the oven. Sprinkle a sugar and cocoa mixture over the batter, pour boiling water on top, don’t touch it, and it bakes into a proper fudge sauce underneath.

The key is pulling it out of the oven as soon as the centre is almost set, not fully firm. This is meant to have a soft, saucy middle, and overbaking will cook away the sauce you worked for.

Serve it warm with strawberries and ice cream, and don’t forget to spoon that fudge sauce over the top. It’s best eaten fairly soon after baking, while the sauce is still silky.

Self-Saucing Chocolate Fudge Cake

DESSERT · BAKING · EASY

Why You'll Love This Self-Saucing Chocolate Fudge Cake

A proper fudge sauce, baked right in

Not stirring the boiling water into the batter is the key step. It needs to sit undisturbed on top so it can sink down and form the sauce layer underneath as it bakes.

Pulling it as soon as the centre is almost set, rather than waiting for it to look fully firm, is what keeps that soft, saucy middle intact instead of baking it away.

It's genuinely simple to make, no complicated technique required, but it looks and tastes like something a lot more impressive.

Self-Saucing Chocolate Fudge Cake

5 from 1 vote
Prep Time: 15 minutes
Cook Time: 40 minutes
Cooling Time: 10 minutes
Total Time: 1 hour 5 minutes
Calories: 286kcal
Servings: 8 People

Ingredients

Cake

  • 150 g Plain Flour All Purpose
  • 165 g Caster Sugar Fine
  • 20 g Cocoa Powder
  • 8 g Baking Powder
  • 2.5 g Sea Salt Flakes
  • 170 g Full Fat Milk
  • 70 g Unsalted Butter
  • 5 g Vanilla Extract
  • 150 g White Chocolate Chips Optional

Chocolate Fudge Sauce

  • 105 g Caster Sugar Fine
  • 85 g Brown Sugar
  • 20 g Cocoa Powder
  • 310 g Boiling Water

To Serve

  • Strawberries Sliced
  • Ice Cream To Serve
  • Icing Sugar Garnish

Method

  • Preheat your oven to 180°C (350°F) and grease a 26cm x 12cm baking dish with melted butter.
  • To make the cake batter, add all of the dry ingredients to a mixing bowl and mix to combine. Once mixed, add the wet ingredients and whisk together until fully incorporated and smooth. Add the white chocolate chips (if using), then transfer the batter to the greased baking dish.
  • In another mixing bowl, combine the caster sugar, brown sugar and cocoa powder, and mix well. Sprinkle the mixture over the top of the cake batter, completely covering the top.
  • Carefully pour the boiling water over the top of the cake and fudge mixture. Don't stir or mix it.
  • Bake in the preheated oven for 35 to 40 minutes or until the centre is almost set. Remove and let cool for 10 minutes.
  • Serve in bowls with freshly sliced strawberries and ice cream. Be sure to spoon over the warm chocolate fudge sauce and dust with icing sugar. Dig in.
Chef's Tips
Don't stir the boiling water into the batter — it needs to sit on top undisturbed so it can sink and form the sauce layer underneath as it bakes.
Pull the cake as soon as the centre is almost set rather than fully firm — this dish is meant to have a soft, saucy middle, and overbaking will cook away the fudge sauce.
Serve it warm and fairly soon after baking — the sauce is at its best straight out of the oven and will firm up and lose its silky texture as it cools.
Storage & Reheating
Best eaten fresh and warm, as the fudge sauce loses its texture once cooled. Leftovers will keep in the fridge for up to 2 days in an airtight container; reheat individual portions in the microwave for 30-45 seconds to bring the sauce back to a pourable consistency.
Serving 150gCalories 286kcalCarbohydrates 38.6gProtein 5gFat 13.5gSaturated Fat 9.1gPolyunsaturated Fat 0.51gMonounsaturated Fat 2.91gTrans Fat 0.3gCholesterol 23.8mgSodium 285.2mgPotassium 186.9mgFiber 1.5gSugar 22.3gVitamin A 225.5IUVitamin C 1.12mgCalcium 156.9mgIron 0.8mg
Common Questions
Why do I pour boiling water over the batter?
It sounds strange, but it's the whole trick to this dish. As it bakes, the water sinks through the batter and combines with the sugar and cocoa layer on top, forming a rich fudge sauce underneath the cooked cake.
How do I know when it's ready to come out?
Look for the centre to be almost set rather than completely firm. This dish is meant to have a soft, saucy middle, so pulling it a touch early is exactly right.
Can I make this ahead of time?
It's really best made fresh, since the sauce loses its silky texture as it cools. If you do have leftovers, they'll keep in the fridge for up to 2 days — reheat individual portions in the microwave for 30-45 seconds to bring the sauce back.
Can I leave out the white chocolate chips?
Yes, they're optional. The cake will still taste great without them, you'll just miss out on the little pockets of extra sweetness through the crumb.
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5 from 1 vote

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