Servings: 12
Preparation Time: 20 minutes
Cook Time: 1 hour, 45 minutes:
Start to Finish Time: 2 hours 5 minutes
DIFFICULTY: 1-5 – 4
Tunnel Of Hazelnut Fudge Cake — A Decadent Chocolate Lover’s Dream
Imagine slicing into an elegant, beautifully sculpted chocolate Bundt cake and discovering a luscious, velvety ribbon of rich chocolate fudge nestled within. Add the irresistible flavor of toasted hazelnuts, a delicate crunch, and an intensely chocolatey finish, and you have something truly extraordinary. This Tunnel Of Hazelnut Fudge Cake is a sophisticated twist on a beloved American dessert classic, delivering the indulgent flavors of chocolate and hazelnuts in every unforgettable bite.
A Legendary Cake with a Fascinating History
The original Tunnel of Fudge Cake holds a special place in American baking history. In 1966, Ella Helfrich of Houston, Texas, entered her remarkable chocolate cake in the Pillsbury Bake-Off Contest, where it won second place. Although it didn’t capture the grand prize, the cake became a nationwide sensation. Its distinctive fudgy center and elegant Bundt shape helped transform the Nordic Ware Bundt pan into a household favorite. Decades later, this legendary dessert continues to inspire bakers who appreciate the magical combination of rich chocolate cake and a wonderfully soft, fudgy interior.
The Irresistible Marriage of Chocolate and Hazelnuts
Chocolate and hazelnuts have long been celebrated as one of the world’s most irresistible flavor combinations. Think of the luxurious, nutty richness of a premium chocolate-hazelnut spread, elevated into an elegant homemade dessert. This cake takes that familiar flavor pairing to another level. Dark unsweetened cocoa creates a deep, complex chocolate foundation, while toasted hazelnuts contribute their distinctive buttery, earthy character. Finely chopped hazelnuts blend throughout the cake, while occasional larger pieces provide a satisfying crunch. The result is a beautifully balanced combination of intense chocolate, toasted nuts, and luscious fudge.
The Magic Is in the Fudge Tunnel
What makes this chocolate hazelnut Bundt cake truly special is its extraordinary texture. Unlike a conventional chocolate cake, which bakes into a uniform crumb, this dessert develops contrasting textures as it bakes. The exterior forms a firm, beautifully defined crust that surrounds a moist, tender interior and an especially rich, fudgy center. The fudge tunnel isn’t a separate filling added after baking; it develops naturally from the cake’s unique combination of ingredients. Every slice reveals a slightly different pattern of chocolate richness, making the cake as visually intriguing as it is delicious.
A Beautiful Bundt Cake Worthy of Any Celebration
Presentation is part of the pleasure of this elegant homemade chocolate dessert. The distinctive ridges and graceful curves of a traditional Bundt pan give the finished cake an impressive, bakery-quality appearance without elaborate frosting or decoration. Its deeply chocolate-colored exterior Whether served at a holiday gathering, birthday celebration, dinner party, or special family occasion, this rich chocolate-hazelnut cake makes an unforgettable impression before the first slice is even served.
The Perfect Finishing Touch — Fresh Whipped Cream
While this cake is magnificent on its own, Chef ETL discovered that serving it with lightly sweetened homemade whipped cream creates an especially delightful flavor balance. The cream’s cool, airy texture and delicate sweetness provide a refreshing contrast to the cake’s intense chocolate richness. Rather than competing with the deep cocoa and toasted hazelnut flavors, the whipped cream softens their intensity and allows their complexity to shine. A generous dollop alongside each slice transforms an already indulgent dessert into a wonderfully balanced experience. For those who appreciate an elegant presentation, a light dusting of confectioners’ sugar adds a beautiful finishing touch.
A Dessert That Rewards Patience and Precision
One of the secrets to a successful Tunnel Of Hazelnut Fudge Cake is understanding that it behaves differently from an ordinary chocolate Bundt cake. Its distinctive fudgy center makes traditional cake-doneness tests less reliable, while its substantial chocolate richness requires careful attention to baking and cooling. The firm outer crust is actually part of the cake’s character, providing structure and helping preserve the beautiful Bundt shape. Beneath that protective exterior lies the deliciously moist, fudgy interior that makes this dessert so special. The reward is a cake with remarkable texture, impressive presentation, and exceptional chocolate flavor.
A Chocolate Dessert That Gets Even Better with Time
Another wonderful characteristic of this decadent chocolate Bundt cake is how well its rich flavors hold up after baking. As the cake rests, the toasted hazelnut and chocolate notes have an opportunity to mingle, creating a satisfying depth of flavor. Leftover slices can also be frozen for another occasion. When brought back toward room temperature, the cake’s dense, fudgy texture becomes particularly reminiscent of a luxurious chocolate-hazelnut confection. It’s a wonderful dessert to prepare for entertaining, especially when you want something impressive that can be enjoyed beyond the day it was baked.
From the Kitchen of Chef ETL
Developing a truly exceptional dessert sometimes requires more than one attempt. Working in collaboration with Chef Emilio Pietro, Chef ETL refined this recipe with special attention to preserving its moist, fudgy interior while achieving a beautifully intact Bundt cake. The improvements produced exactly the desired result: a striking chocolate cake with a firm exterior, luscious center, and wonderful toasted-hazelnut character. During the final tasting, serving the cake with fresh whipped cream proved to be an especially successful finishing touch, bringing balance to its luxurious richness.
A Showstopping Dessert for Serious Chocolate Lovers
If you’re searching for an unforgettable chocolate Bundt cake recipe, an elegant hazelnut dessert, or a special occasion cake that delivers something beyond ordinary chocolate cake, Tunnel Of Hazelnut Fudge Cake deserves a place at your table. Its combination of deep chocolate flavor, toasted hazelnuts, and an irresistibly fudgy center makes every slice a celebration of rich, indulgent baking. Serve it with a dollop of freshly whipped cream, pour a cup of your favorite coffee, and savor a dessert that proves some of life’s greatest pleasures come wrapped in chocolate.
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Ingredients:
HAZLENUTS:
2 cups hazelnuts, TOASTED and skinned
2 cups all-purpose flour (240 grams)
1 teaspoon salt
CONFECTIONER’S MIX
2 cups confectioner’s sugar, plus more for dusting
3/4 cup dark unsweetened Dutch-processed cocoa powder (like Valrhona)
BATTER:
10 ounces unsalted butter (2 1/2 sticks), AT ROOM TEMPERATURE, cut into 1/2 inch cubes
1 cup sugar
3/4 cup dark brown sugar, firmly packed
6 large eggs, AT ROOM TEMPERATURE (includes 3 whole, 3 yolks-only)
1/4 cup avocado oil
1 tablespoon vanilla extract
Instructions:
Preheat the oven to 350°.
Generously and thoroughly grease the inside of a 12-cup Bundt pan with unsalted butter. Dust it with cocoa powder, and knock out the excess cocoa.
BOWL A – HAZLENUTS (5 minutes):
Reserve 2 tablespoons of the toasted, skinned hazelnuts and coarsely chop them into approximately ¼-inch pieces. Place the remaining hazelnuts in a food processor and pulse until finely chopped, resembling coarse sand.
Combine the finely chopped and reserved coarse hazelnuts, then add the flour and salt. Whisk until evenly distributed.
BOWL B – CONFECTIONERS’ MIX (5 minutes):
Sift together the confectioners’ sugar and cocoa powder into a small bowl.
BATTER (10 minutes):
In the bowl of a standing mixer fitted with the paddle attachment, beat the softened butter, on medium speed, for 30 seconds.
Add both sugars and continue beating for 3-4 minutes. Halfway through, scrape down the sides and bottom of the bowl,
Turn the mixer to medium-low, and add the eggs,starting with the whole eggs and finishing with the yolks for a period of 15-20 seconds each egg/yolk.
Slowly drizzle in the 1/4 cup avocado oil over approximately 30–45 seconds
Add the vanilla extract. Continue mixing for another 20–30 seconds. Scrape the sides and bottom of the bowl.
Reduce speed to lowest setting and add appx. 1/3 of the confectioners’mixture and beat on for 10-15 seconds.Repeat 1/3 each and stop and scrape the bowl.
Remove the bowl from the mixer and gently fold in the nut mixture (appx. 20-30 folds).
BAKE (45 minutes):
Using a large spoon or spatula, distribute the batter evenly around the prepared Bundt pan. Gently press the batter into the decorative grooves to eliminate large air pockets. Smooth the top with a spatula. Gently tap the pan once or twice on a towel-covered countertop.
Bake for 38 to 45 minutes, rotating the pan halfway through the baking time.
At approximately 38 minutes, look for these three indicators:
– Edges: The outer edges should be set and beginning to pull slightly away from the Bundt pan.
– Surface: The top should look baked rather than wet or shiny with raw batter. Some cracks are normal.
– Spring-back: Gently press the exposed cake surface with your fingertip. It should feel set and spring back slightly rather than leaving a deep indentation.
COOL & SERVE (45 minutes)
Transfer the Bundt to a wire rack to cool for 20 minutes in the pan (see TIPS).
Gently loosen the sides of the cake from the pan and turn it out onto a serving platter.
Sprinkle with a little sifted confectioners sugar, if you like, and serve immediately with whipped cream (optional).
TIP: It’s important to remove the cake from the pan while still warm, as this produces the cleanest release. If you wait until the cake is entirely cool, the cake is likely to fully stick inside the pan. Don’t hesitate, just turn your pan over in one smooth motion onto a wire rack. The faster your movement, the cleaner the release!
TIP: Use a nonstick Bundt pan in excellent condition
