Hot Chocolate Pudding Cake (Self-Saucing)

Quick Recipe Version (TL;DR)

• Yield: 6 to 8 servings
• Prep Time: 15 minutes
• Cook Time: 35 minutes
• Total Time: 1 hour

Quick Ingredients

• Butter for the pan
• 1 cup (125 g) all-purpose flour
• 3/4 cup (150 g) granulated sugar
• 1/4 cup (25 g) unsweetened cocoa powder, plus 1/4 cup (25 g) for topping
• 2 tsp baking powder
• 1/4 tsp fine sea salt, plus a pinch for topping
• 1/2 cup (120 ml) whole milk, room temp
• 1/4 cup (57 g) unsalted butter, melted and slightly cooled
• 1 1/2 tsp vanilla extract
• 1 tsp instant espresso powder (optional)
• 3/4 cup (150 g) packed light brown sugar
• 1 tbsp (8 g) cornstarch
• 1 1/2 cups (360 ml) very hot coffee or water
• To serve: vanilla ice cream or whipped cream; flaky sea salt (optional)

Do This

• 1. Heat oven to 350°F (175°C). Butter an 8-inch (20 cm) square or 2-quart baking dish.
• 2. Whisk flour, 3/4 cup sugar, 1/4 cup cocoa, baking powder, and 1/4 tsp salt.
• 3. Stir milk, melted butter, vanilla, and espresso powder; fold into dry to make a thick, smooth batter.
• 4. Spread batter evenly in the dish.
• 5. Combine brown sugar, remaining 1/4 cup cocoa, cornstarch, and a pinch of salt; sprinkle over batter.
• 6. Pour 1 1/2 cups very hot coffee or water over the top. Do not stir.
• 7. Bake 35 minutes until the top is set and cracked with bubbling sauce around edges. Rest 10 minutes, then spoon into bowls with ice cream; finish with flaky salt.

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Why You’ll Love This Recipe

• Self-saucing magic: one batter bakes into a fluffy cake with its own hot fudge sauce underneath.
• Minimal equipment and pantry staples; no mixer required.
• Ready in about an hour, perfect for last-minute dessert cravings.
• Customizable: tweak spices, add espresso, or finish with ice cream and flaky salt.

Grocery List

• Produce: Optional garnish: orange (for zest), fresh raspberries or mint
• Dairy: Unsalted butter; whole milk; vanilla ice cream or heavy cream (optional)
• Pantry: All-purpose flour; granulated sugar; light brown sugar; unsweetened cocoa powder; baking powder; fine sea salt; vanilla extract; instant espresso powder (optional); cornstarch; coffee (or use hot water)

Full Ingredients

For the pan

• 1 tsp butter or neutral oil, for greasing

Cake Batter

• 1 cup (125 g) all-purpose flour
• 3/4 cup (150 g) granulated sugar
• 1/4 cup (25 g) unsweetened cocoa powder (Dutch-process or natural)
• 2 tsp baking powder
• 1/4 tsp fine sea salt
• 1/2 cup (120 ml) whole milk, at room temperature
• 1/4 cup (57 g) unsalted butter, melted and slightly cooled
• 1 1/2 tsp vanilla extract
• 1 tsp instant espresso powder (optional, enhances chocolate flavor)

Fudgy Sauce Topping

• 3/4 cup (150 g) packed light brown sugar
• 1/4 cup (25 g) unsweetened cocoa powder
• 1 tbsp (8 g) cornstarch
• Pinch fine sea salt
• 1 1/2 cups (360 ml) very hot coffee or boiling water

For Serving (optional but lovely)

• Vanilla ice cream or lightly sweetened whipped cream
• Flaky sea salt or chocolate shavings
• Fresh raspberries or a whisper of orange zest

Step-by-Step Instructions

Step 1: Preheat and prepare the dish

Position a rack in the center of the oven and heat to 350°F (175°C). Lightly butter an 8-inch (20 cm) square baking dish or a 2-quart (2 L) casserole. A light-colored ceramic or glass dish helps you see the bubbling sauce at the edges.

Step 2: Mix the dry ingredients

In a large bowl, whisk together the flour, granulated sugar, 1/4 cup cocoa, baking powder, and 1/4 teaspoon salt until uniform and lump-free. This ensures even rise and chocolate flavor.

Step 3: Add the wet and make a thick batter

In a measuring jug, stir the milk, melted butter, vanilla, and espresso powder (if using). Pour into the dry ingredients and stir with a spatula just until smooth. The batter will be thick but spreadable; avoid overmixing.

Step 4: Spread the batter

Scrape the batter into the prepared dish and spread it evenly into the corners. Smooth the top with an offset spatula or the back of a spoon.

Step 5: Build the self-saucing layer

In a small bowl, mix the brown sugar, remaining 1/4 cup cocoa, cornstarch, and a pinch of salt. Sprinkle this mixture evenly over the batter. Slowly pour the very hot coffee (or boiling water) over the entire surface. Do not stir. The liquid will look like it’s floating on top—that’s correct and creates the sauce under the cake as it bakes.

Step 6: Bake to set the top and thicken the sauce

Bake for 35 minutes, until the top looks set, dry, and cracked like a brownie, with bubbling fudge visible around the edges. If your oven runs hot or the dish is shallower, begin checking at 30 minutes. A toothpick test won’t work because of the sauce; instead, gently tap the center—it should feel springy, not liquid.

Step 7: Rest briefly, then serve hot

Let the pudding cake stand for 10 minutes so the sauce thickens slightly. Spoon into warm bowls, making sure to scoop deep to capture the glossy fudge beneath. Add a scoop of vanilla ice cream or a dollop of whipped cream and finish with a few flakes of sea salt or a dusting of cocoa. Enjoy immediately.

Pro Tips

• Use Dutch-process cocoa for a deeper, smoother chocolate flavor; natural cocoa also works but will taste a bit brighter.
• Coffee won’t make the dessert taste like coffee; it simply amplifies the chocolate. Use hot water if preferred.
• Do not stir after pouring on the hot liquid. The separation is what forms the sauce layer.
• Measure flour by weight or lightly spoon into the cup and level. Too much flour makes a dry top and less sauce.
• Dish size matters: an 8-inch square or 2-quart dish yields the ideal cake-to-sauce ratio. Larger dishes bake faster and make a thinner sauce.

Variations

• Mocha Chip: Stir 1/2 cup (85 g) semisweet chocolate chips into the batter and use hot coffee on top.
• Mexican Hot Chocolate: Add 1/2 tsp ground cinnamon and a tiny pinch (1/16 tsp) cayenne to the batter; finish with orange zest.
• Gluten-Free: Substitute a 1:1 gluten-free baking flour. Add 1 extra tablespoon milk if the batter seems stiff.

Storage & Make-Ahead

This dessert shines straight from the oven. Leftovers can be covered and refrigerated for up to 3 days; the sauce will thicken as it chills. Rewarm gently at 300°F (150°C) for 12 to 15 minutes or microwave individual portions for 20 to 30 seconds until warm and saucy. Make-ahead tip: whisk the dry batter ingredients in one container and the cocoa-sugar topping in another; at dessert time, add the wet ingredients, assemble, pour on hot liquid, and bake.

Nutrition (per serving)

Approximate for 1 of 8 servings (without toppings): 290 calories; 12 g fat; 49 g carbohydrates; 4 g protein; 3 g fiber; 34 g sugars; 230 mg sodium.