Equipment
* optional
Ingredients
Crock Preparation
- 10 g unsalted butter, softened
Chocolate Pudding Batter
- 150 g all-purpose flour
- 100 g granulated sugar
- 30 g dutch-process cocoa powder
- 8 g baking powder
- 3 g fine sea salt
- 120 ml whole milk, room temperature
- 60 g unsalted butter, melted and cooled slightly
- 5 ml vanilla extract
- 80 g dark chocolate chips
Fudge Sauce Layer
- 120 g dark brown sugar, packed
- 30 g dutch-process cocoa powder
- 350 ml boiling water, freshly boiled
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
Only basic nutrition values are available for this recipe. More detailed nutrient data is incomplete.
- Calories
- 421 kcal
- Protein
- 6 g
- Carbohydrates
- 71 g
- Fat
- 16 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Coat the bottom and lower 8 cm (3 inches) of the slow cooker insert evenly with 10 g of softened unsalted butter using clean fingertips or a paper towel.
In a large mixing bowl, combine 150 g all-purpose flour, 100 g granulated sugar, 30 g sifted dutch-process cocoa powder, 8 g baking powder, and 3 g fine sea salt with a whisk until thoroughly blended.
In a medium mixing bowl, whisk together 120 ml whole milk, 60 g melted unsalted butter, and 5 ml vanilla extract until cohesive.
Pour the milk mixture into the dry flour mixture and stir gently with a silicone spatula just until a thick, shiny batter forms.
Add 80 g dark chocolate chips to the batter and fold with the silicone spatula until evenly distributed throughout.
Transfer the batter into the greased slow cooker insert and smooth the top into an even layer using the silicone spatula.
In the emptied medium mixing bowl, combine 120 g dark brown sugar and 30 g sifted dutch-process cocoa powder, whisking thoroughly to break apart any packed lumps.
Scatter the brown sugar and cocoa mixture evenly across the entire surface of the batter in the slow cooker insert.
Bring 350 ml of water to a rolling boil at 100°C (212°F) using an electric kettle.
Hold a large serving spoon upside down over the slow cooker insert and slowly pour the 350 ml boiling water over the convex back of the spoon, allowing it to diffuse gently over the dry topping without stirring.
Drape a clean kitchen towel tautly across the open slow cooker, secure the lid firmly on top over the cloth to prevent condensation drips, and cook on High for 2 hours until the center sponge registers at least 93°C (200°F) on an instant-read digital thermometer.
Switch off the slow cooker, remove the lid and towel, and let the pudding rest uncovered at room temperature for 15 minutes.
Plunge a large serving spoon straight to the bottom of the slow cooker to portion out warm chocolate sponge along with a generous pool of underlying molten fudge sauce.
Chef's Notes
- Dutch-process cocoa powder is strongly recommended over natural cocoa because the alkalizing treatment neutralizes natural acidity, creating a smoother, rounder chocolate profile and an intensely dark fudge sauce.
- Using boiling water rather than warm water over the sugar topping is essential; boiling liquid instantly initiates the rise of the batter and starch gelatinization, ensuring the cake floats up cleanly as the sauce settles below.
- For an espresso-accented dessert, replace 100 ml of the boiling water with 100 ml of freshly brewed dark roast coffee or hot espresso; it amplifies chocolate depth without imparting an overt coffee taste.
- Promptly cool and refrigerate any leftover pudding within 2 hours of cooking; when reheating leftovers, ensure the dish reaches a safe minimum internal temperature of 74°C (165°F).
Storage
Refrigerator: 4 days — Cool leftovers promptly and store in an airtight container within 2 hours of cooking. The sponge will gradually absorb the sauce upon sitting.
Freezer: 1 month — Freeze in airtight freezer-safe containers. Thaw overnight in the refrigerator before reheating.
Reheating: Reheat refrigerated portions in a covered microwave-safe dish or oven-safe dish until the internal temperature reaches at least 74°C (165°F). Add 15 to 30 ml of warm milk or water if the sauce has thickened excessively.
Troubleshooting
The top surface of the cake sponge is wet, soggy, and gelatinous.
Cause: Steam condensed on the underside of the slow cooker lid and dripped continuously onto the pudding because the towel barrier was omitted.
Fix: Remove the lid and run the slow cooker on High for an extra 10 to 15 minutes uncovered to evaporate surface moisture.
Prevention: Always stretch a clean kitchen towel or several layers of paper towels tightly beneath the slow cooker lid before sealing.
The outer rim of the pudding is burnt and smells acrid while the center is soft.
Cause: The slow cooker base ran hot along the perimeter, a common occurrence in high-wattage oval appliances.
Fix: Scoop servings solely from the central section and discard the scorched border; burnt chocolate cannot be rectified.
Prevention: Check internal cake doneness starting at 1 hour 45 minutes, and rotate the insert 180 degrees halfway through if your machine heats unevenly.
No fudge sauce formed beneath the cake; the pudding is uniform and cake-like throughout.
Cause: The water and dry topping were vigorously stirred into the batter instead of remaining layered, or the pudding was overcooked and absorbed all free liquid.
Fix: Cannot be fixed in the cooker, but you can restore moisture by pouring 30 ml of warm heavy cream or prepared chocolate syrup over individual plated portions.
Prevention: Never stir after adding the brown sugar, cocoa, and boiling water; maintain the discrete layers so gravity separates sponge from sauce.
Cultural Context
The self-saucing pudding, celebrated as a classic comfort bake throughout Britain, Australia, and New Zealand, originated as an economical mid-twentieth-century dessert that magically produces its own decadent sauce during baking. While traditionally baked in an oven water bath, this slow cooker variation captures moisture in an enclosed gentle environment, resulting in an exceptionally tender crumb and unctuous molten fudge layer.
