Introducing the timeless delight: Classic Tunnel of Fudge Cake! This legendary cake, reminiscent of the 1970s era, evokes nostalgia with every decadent bite. Once a staple in many households, this recipe resurfaced from the archives, rescuing it from oblivion. Originally, it was crafted using a dry frosting mix from Pillsbury. However, when Pillsbury discontinued this essential ingredient, a gap was left in the hearts of dessert enthusiasts everywhere. Yet, fear not! An inspired rendition emerged, thanks to the culinary explorations chronicled in the esteemed “Minneapolis Star Tribune” food column.
This dessert masterpiece seamlessly blends the simplicity of preparation with the indulgent satisfaction of a rich, fudgy texture. Clocking in at a cook time of just one hour and thirty-five minutes, it’s a dessert that’s both impressive and achievable for any occasion. Whether it’s a weeknight treat, a potluck contribution, or a festive Christmas dessert, this cake is sure to steal the show.

Let’s delve into the intricacies of this recipe. To start, preheat your oven to a toasty 350 degrees Fahrenheit. Meanwhile, prepare your 10-inch Bundt pan by generously greasing and flouring it, ensuring that every nook and cranny is coated for effortless release later.
Now, let’s gather our ingredients. You’ll need:
- 1 3/4 cups of butter
- 1 1/2 cups of white sugar
- 6 eggs
- 2 cups of all-purpose flour
- 2 cups of chopped walnuts
- 2 cups of boiling water
Yes, that’s right, boiling water! It may seem unconventional, but trust the process—it’s a key player in achieving the signature texture of this cake.
In a large mixing bowl, embark on your journey by creaming together the butter and sugar until they’re light and fluffy, a harmonious blend of sweetness and richness. Then, one by one, introduce the eggs into the mixture, ensuring each is fully incorporated before proceeding. Next, gently fold in the remaining frosting mix and flour, taking care not to overmix. Finally, add the chopped walnuts, infusing the batter with their earthy crunch.
Pour this delectable batter into your prepared Bundt pan, spreading it evenly to ensure uniform baking. Slide it into the preheated oven and let it work its magic for 60 minutes. As it bakes, anticipate the formation of a brownie-like crust atop the cake—a tantalizing hint of the indulgence that awaits within.
Once the timer dings, exercise patience as you allow the cake to cool for 60 minutes in the pan. This crucial step allows the flavors to meld and the structure to set. Afterward, gently transfer it to a wire rack to cool completely, resisting the temptation to sneak a taste until it’s fully cooled.
But wait, there’s more! What’s a Tunnel of Fudge Cake without its crowning glory—a luscious chocolate glaze? Fear not, for it’s a simple yet essential finishing touch. Begin by setting aside 3/4 cup of the frosting mix reserved specifically for this purpose. Then, combine it with 2 tablespoons of boiling water, stirring with care until smooth and glossy. Should you desire a thinner consistency, feel free to add additional boiling water until your desired texture is achieved.
With your glaze prepared, it’s time for the grand finale. Spoon it generously over the cooled cake, allowing it to cascade down the sides in a mesmerizing display of chocolate decadence. Revel in the moment as you admire your creation—a true masterpiece ready to be savored and shared.
With an aggregated rating of 5 stars from 6 glowing reviews, this Classic Tunnel of Fudge Cake is more than just a dessert—it’s a journey through time, a testament to the enduring allure of homemade treats. At 606.4 calories per serving, it’s a decadent indulgence best enjoyed in the company of loved ones, making memories that will last a lifetime. So, gather your ingredients, preheat your oven, and embark on a culinary adventure that’s as timeless as it is delicious.