Tunnel of Fudge Cake
Tunnel of Fudge cake was made famous by the Pillsbury Bake-Off. This version from America’s Test Kitchen is chocolatey and indulgent, as the name would suggest.
Hello beautiful!
This cake just screams indulgent with it’s chocolatey cake filled with a gooey underbaked center and topped with a chocolate glaze. It’s the perfect dessert to impress friends, family members, or that special someone in your life.
I made this cake for dinner with some friends. We all went back for seconds. As you can see in the pictures, I overbaked mine a smidge since my tunnel wasn’t quite as gooey as other pictures I’ve seen of this cake. I can tell you that I’ve made it again since taking these pictures and baked it a few minutes less and it had a more gooey-underbaked center. So my suggestion is to take the cake out a little before you think you need to.
I served the cake with some fresh raspberries and at the last second added some freshly whipped cream to the table as well. Even for this chocolate lover, I enjoyed the berries and cream to cut through the intense chocolateness coming from this cake.
I love the tip from America’s Test Kitchen to paint the inside of the bundt pan with a melted butter and cocoa mixture. Not only was it fun to do, it yielded a cake that came out of it’s pan with no issues. I’m definitely going to be using that trick for other chocolate bundt cakes in the future.
Two Years Ago: Black and Tan Brownies and Cherry M&M Chocolate Chip Oatmeal Cookies
Three Years Ago: Colorful Cumin Quinoa Salad and Black Forest Cupcakes
Four Years Ago: Chinese Restaurant Almond Cookies
Tunnel of Fudge Cake
Tunnel of Fudge cake was made famous by the Pillsbury Bake-Off. This version from America's Test Kitchen is chocolatey and indulgent, as the name would suggest.
Yield: Serves 12-14
Ingredients:
For the Pan
1 Tbsp Dutch-processed cocoa powder
1 Tbsp unsalted butter, melted
For the Cake
1/2 cup boiling water
2 oz bittersweet chocolate, chopped
2 cups flour
3/4 cup Dutch-processed cocoa powder
2 cups powdered sugar
1 tsp salt
5 eggs, at room temperature
1 Tbsp vanilla
1 cup sugar
3/4 cup packed brown sugar
20 Tbsp unsalted butter, at room temperature
For the Glaze
3/4 cup heavy cream
1/4 cup light corn syrup
8 oz bittersweet chocolate, finely chopped
1/2 tsp vanilla
Directions:
For the Pan
Preheat the oven to 350 degF. In a small bowl, whisk together the cocoa powder and melted butter. Use a pastry brush to evenly coat the inside of a 12-cup bundt pan.
For the Cake
In a medium bowl, pour the boiling water over the chopped chocolate. Let stand for a minute, then whisk until smooth. In a medium bowl, combine the flour, cocoa powder, powdered sugar, and salt. Combine the eggs and vanilla in a liquid measuring cup and beat lightly.
In the bowl of an electric mixer, combine the granulated sugar, brown sugar, and butter. Beat on medium-high speed until light and fluffy, about 2 minutes. With the mixer on low speed, add in the egg mixture just until combined. Add the chocolate mixture and mix until incorporated. Blend in the dry ingredients until just combined.
Spread the batter into the prepared pan. Bake for about 45 minutes or until the edges of the cake begin to pull away from the pan.
Allow the cake to cool on a wire rack for 2 hours before inverting onto a cake platter. Allow to cool completely, about 2 more hours.
For the Glaze
Combine the cream, corn syrup, and chocolate in a small saucepan. Heat over medium heat, stirring frequently, until smooth. Blend in the vanilla. Set aside for about 30 minutes, until slightly thickened. Drizzle the glaze over the cake and let set for at least 10 minutes before slicing.
Recipe from Cook's Illustrated Entertaining, Holiday 2010
I am Jen the Beantown Baker. Engineer by day and baking maven by night. Hubby serves as my #1 fan and official taste tester. We got hitched back in 2006. Barefoot. In the sand. With the waves crashing behind us. It was one of the best decisions we’ve ever made. 
These look fantastic and are so festive!
Oh my, these look divine! I recently made something similar, but with no chocolate – just a pumpkin batter with cream cheese topping. But I definitely think I must try these too.
These are absolutely beautiful!
Look wonderful!
These look awesome. I just wish it made a bigger pan!
They’re pretty rich, but I would imagine you could just double it and make it in a 9×13 pan if you wanted!
I made pumpkin spice brownies on Friday and they were delish so I bet these are EVEN BETTER! Thanks for sharing and I’ll be following your tweaks!
~ingrid
i always make a pumpkin cheesecake in the fall with a ginger cookie crumb crust, but i’m liking the chocolate component in your recipe even more.
oh yum – love pumpkin, and the chocolate/pumpkin combo looks wonderful!
These look great! Is there a way I can make them non-dairy? Something I can sub the cream cheese for? Thanks!
Heather – I’ve had great luck subbing Tofutti Better than Cream Cheese in cheesecake recipes in the past. I think that would definitely work and you could use Earth Balance in the brownie portion. Let me know how it turns out if you try it.
Hi Jenn! I just wanted to let you know that you won the giveaway on my blog last week. I emailed you, but never got a response. Could you email me your mailing address to jennharton@paducah.com. I have to pass it along to myblogspark so they can send you your prize package!
Thanks, Jen…I’ll let you know how they come out!
OH wow these do look delicious! I love all that swirled pumpkin…yum!
Those look amazing!
Wow, I love these! My husband would die of happiness of I made these for him – pumpkin cheesecake is his favorite thing for fall.
They look like tiger fur – very cool! What an interesting flavour combination.
We love these at my house! I like your idea of dark chocolate – I will have to try that next time.
beautiful! And they look so delicious!! I agree I don’t normally think of pumpkin with chocolate… but you have me convinced!
The tops of these are a work of art! Love it!
Three of my favorite thi ngs in one dessert! Chocolate and pumpkin and cheesecake! How perfect…
~Nancy
Three of my favorite thi ngs in one dessert! Chocolate and pumpkin and cheesecake! How perfect…
~Nancy
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The side-view shot totally won me over. These look delicious!
This looks so yummy.
I now know what to make for the office potluck!
Those look amazing. I love pumpkin with chocolate, I plan on making these soon.
Your brownies look delicious! I am curious since I would like mine to taste more like pumpkin pie than plain pumpkin should i add pumpkin pie spices or follow your recipe for the spices?
Thanks!
fawkes – There are a decent amount of spices in the pumpkin portion of the batter. I would recommend making is as the recipe states, then taste it before you pour it into the pan. Maybe then add some pumpkin pie spice if you’d like.
I made these over the weekend and they were scrumptious!! I’m not a huge fan of pumpkin but this recipe is now a fall staple. I plan on making them for the family on Thanksgiving…thanks for sharing this!
I made these the other day and they were great! a hit at work! yum! thanks!
I stumbled across your blog from a Facebook friend and made these brownies last night. DELICIOUS!! I doubled the recipe and it does just fit in a 9×13 pan and took about 60 mins to bake. It’s worth the wait for them to be chilled in the fridge. The flavors are even more delicious that way.
Oh YUM! And gorgeous, to boot. I never thought pumpkin and chocolate go together either, until I tried it! 🙂 Now I’m hooked. Good idea to double up on the cheesecake layer…you can never have enough pumpkin cheesecake after all!
Thank you so much for participating in our event! These brownies look amazing. They say Halloween to me for sure!
I made these– now I love them! Will be repeated each fall 🙂
Amazing! I loved these so much I played with them a bit and made cranberry cheesecake brownies for my christmas baking.(I didn’t stumble on to these till christmas.) I’ll let you know when I put those up on my blog! With credit to you of course!
Lexi – cranberry cheesecake brownies sound very intriguing. Can’t wait to see them.
Hi Jen! I made these for Heather@BFM’s (comment listed above) birthday and she loved them! Unfortunately I could not find the Hershey’s Special Dark cocoa powder (I tried 3 stores) so I had to make them with the regular cocoa powder. Can you tell me where you found the Hershey’s Special Dark??
Kasey – I have actually had a hard time finding it as well. I had actually all but given up on it until one day it caught my eye at the grocery store. I proceeded to buy all three containers. I would say just keep an eye out for it and good luck!
1/2 cup of flour seems like very little. Is that correct?
Pup – Yes, that is the correct amount of flour. Most brownie batters have very little flour in them.
Just made these- delicious! I only had the milk chocolate powder, so I’m excited to try it again with the special dark powder.
I doubled the recipe and it perfectly filled a 13×9 pan so you might try it. 🙂 And they are amazing. Also I used margerine not butter and found they were more moist. Happy Baking!
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I made these with my nieces and over all they were pretty good, but something about the pumpkin part tasted off. Still, fun and festive to make!