Fudgy Chocolate Dump Cake Recipe
A decadent, intensely chocolatey cake with a moist interior and crackly top that magically forms its own layers as it bakes with minimal effort.
Ingredients
<ul class="ingredients-main-list"><li class="ingredients-single-item">200g granulated sugar</li><li class="ingredients-single-item">100g all-purpose flour</li><li class="ingredients-single-item">60g unsweetened cocoa powder</li><li class="ingredients-single-item">2 tsp baking powder</li><li class="ingredients-single-item">1/2 tsp salt</li><li class="ingredients-single-item">250ml milk</li><li class="ingredients-single-item">100g unsalted butter, melted</li><li class="ingredients-single-item">2 tsp vanilla extract</li><li class="ingredients-single-item">150g dark chocolate chips or chunks</li><li class="ingredients-single-item">For the topping:</li><li class="ingredients-single-item">100g light brown sugar</li><li class="ingredients-single-item">30g unsweetened cocoa powder</li><li class="ingredients-single-item">375ml hot water (not boiling)</li></ul>
Equipment
<ul class="equipment-main-list"><li class="equipment-single-item">23cm (9-inch) square baking dish</li><li class="equipment-single-item">Heatproof mixing bowl</li></ul>
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Directions
<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>Preheat your oven to 180°C (350°F). Lightly grease a 23cm (9-inch) square baking dish. Position your oven rack in the middle position for even heat distribution.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>In a large mixing bowl, whisk together the dry ingredients: 200g sugar, 100g flour, 60g cocoa powder, baking powder, and salt. This thorough mixing ensures no bitter cocoa pockets remain in your finished cake.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>Pour in the milk, melted butter, and vanilla extract. Stir everything together until you have a thick, smooth batter. Don't overmix – stop when the ingredients are just combined to prevent developing too much gluten, which would make your cake tough rather than tender.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>Fold in the chocolate chips or chunks, distributing them evenly throughout the batter. These will create pockets of melted chocolate in your finished cake for an extra indulgent experience.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>Spread the batter evenly into your prepared baking dish. It will be quite thick, so use a spatula to ensure it reaches all corners and forms a level surface.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>In a separate bowl, whisk together the topping ingredients: brown sugar and remaining cocoa powder. Sprinkle this mixture evenly over the top of the batter. The sugar-cocoa mixture will interact with the hot water to create magical layers during baking.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>Very carefully and slowly pour the hot water over the entire surface. Do not stir! This seems counterintuitive, but this is the "magic" part of the dump cake – the water and dry topping will transform during baking. The hot water activates the cocoa and helps create the fudgy sauce underneath.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Carefully transfer the baking dish to the preheated oven. The dish will be very full and liquidy on top, so move slowly to avoid spills.</li><li class="MethodStepper"><h4 class="step-title">Step 9</h4>Bake for 35-40 minutes until the top appears set but the cake still jiggles slightly when gently shaken. A perfect dump cake has a cakey top layer with a pudding-like sauce underneath, so don't worry if it seems underbaked compared to traditional cakes. The toothpick test doesn't work here!</li><li class="MethodStepper"><h4 class="step-title">Step 10</h4>Remove from the oven and allow to cool for 15-20 minutes before serving. This resting time allows the layers to settle and the temperature to become pleasantly warm rather than scalding hot.</li><li class="MethodStepper"><h4 class="step-title">Step 11</h4>Serve warm, scooping portions into bowls to capture the fudgy sauce that forms at the bottom. The contrast between the cakey top and saucy bottom is what makes this dessert so special. A scoop of vanilla ice cream or lightly whipped cream makes a wonderful accompaniment, melting into the warm cake.</li></ol>
Chef’s Notes
A few helpful details for making this recipe.
Why does the top crack on a self-saucing chocolate pudding?
The crackly top forms as the cake bakes because the sugar in the batter caramelises at the surface while moisture evaporates. This creates a thin, crisp crust similar to brownies, while underneath, the cake remains moist and fudgy, creating that delightful textural contrast that chocolate lovers crave.
Can you make a dump cake ahead of time?
Yes, you can prepare a dump cake up to 2 days ahead. Once cooled completely, cover tightly with cling film and refrigerate. To serve, reheat individual portions in the microwave for 20-30 seconds or warm the entire cake in a 150°C oven for about 15 minutes until heated through.
What makes a chocolate cake fudgy rather than cakey?
Fudgy chocolate cakes have higher fat-to-flour ratios, with more butter, chocolate, and fewer leavening agents. They're often slightly underbaked to maintain moisture and typically contain less flour than cakey versions. The magic of self-saucing varieties comes from the hot water technique creating distinct texture layers.
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