Hailing from the nostalgic pages of American baking history, the Tunnel of Fudge Cake captivates with its rich, gooey center, ensconced by a chewy exterior. With a perfect balance of texture and flavor, each slice promises an indulgent experience worthy of celebration.
Why This Recipe Works
- Incorporates nuts for structural integrity and crunch.
- Bakes into a chewy crust with a fudgy center due to dense batter.
- Utilizes a bundt pan for consistent shape and even baking.
- Intense chocolate flavor achieved through cocoa and chocolate chips.
Ingredients

- 1 3/4 cups unsalted butter, softened
- 2 cups granulated sugar
- 6 large eggs, at room temperature
- 2 1/4 cups powdered sugar
- 1 3/4 cups all-purpose flour
- 3/4 cup cocoa powder
- 2 cups chopped walnuts
- 1 cup semi-sweet chocolate chips
- 1 tsp vanilla extract
- 1/4 tsp salt
Equipment Needed
- 10-inch Bundt pan
- Electric mixer
- Spatula
- Large mixing bowl
- Wire cooling rack
Instructions

Step 1: Prepare the Bundt Pan
Commence by preheating your oven to 350°F. Liberally butter and flour a 10-inch Bundt pan, ensuring every nook is coated to prevent sticking later. This step guarantees a flawless release of your cake once baked. Allow the prepared pan to rest while assembling the batter.
Step 2: Cream the Butter and Sugar
Using an electric mixer, cream together the softened unsalted butter and granulated sugar in a large mixing bowl. Achieve a light and fluffy texture, beating on medium speed for approximately 4 minutes. Gradually incorporate eggs, one at a time, ensuring each egg is fully absorbed before introducing the next. This aerates the batter, critical for maintaining the desired cake texture.
Step 3: Mix in Dry Ingredients
Incorporate the powdered sugar, which contributes to the unique texture of the cake, followed by the cocoa powder, all-purpose flour, vanilla extract, and salt. Utilize a spatula to gently fold these ingredients in, sparing the batter from overmixing, which would otherwise affect the cake’s final crumb structure.
Step 4: Add Nuts and Chocolate Chips
Introduce the chopped walnuts and semi-sweet chocolate chips into the batter, folding them in until evenly distributed. The walnuts provide a delightful textural contrast and structural balance to the fudgy cake. Ensure no ingredient clusters to achieve a uniform bake.
Step 5: Transfer and Bake
Delicately transfer the batter into the prepared Bundt pan, spreading evenly with a spatula. Bake for exactly 45-50 minutes. Look for the formation of a set crust while ensuring the center retains a gooey momentum. Avoid overbaking, as it would compromise the integral fudgy center.
Step 6: Cooling and Unmolding
Remove the cake from the oven to a wire cooling rack and allow it to rest for precisely 1 hour. This resting period allows the cake to retain its luscious, gooey texture. Carefully invert the pan onto the rack and gently release the cake, providing ample time for structural cooling before slicing.
Tips and Tricks
Enhance the sensory delight by toasting the walnuts before incorporating them into the batter. For a twist, add a pinch of espresso powder to intensify the chocolate notes. Ensure all ingredients are at room temperature to foster optimal mixing and prevent unintended curdling or density variations.
Recipe Variations
- Nut Variations: Substitute pecans or hazelnuts for walnuts, adding a distinct flavor profile.
- Flavor Infusions: Introduce orange zest or cinnamon to the batter for a seasonal twist.
- Glaze Finish: Complement the cake with a smooth chocolate ganache or vanilla glaze for added richness.
- Health Conscious: Use almond flour and coconut sugar for a gluten-free and lower-glycemic option.
Frequently Asked Questions
Can I make this cake in advance? Yes, this cake can be prepared a day ahead. After it cools completely, cover it securely with plastic wrap to maintain moisture and freshness.
What does the “tunnel” in Tunnel of Fudge Cake refer to? The term “tunnel” alludes to the gooey, fudgy center of the cake, which naturally forms as the outer layers set during baking.
Can I use a different pan? A bundt pan is essential for this recipe to ensure even baking and the distinctive shape, which aids the cake’s structural integrity.
Summary
Luxuriously indulgent, the Tunnel of Fudge Cake offers a perfect blend of chewy and gooey textures with hints of walnut crunch, making it an irresistible dessert centerpiece.
Chocolate Bundt Cake
12
servings20
minutes50
minutesIngredients
Instructions
- 1 Preheat oven to 350°F. Butter and flour a 10-inch Bundt pan.
- 2 Cream butter and sugar until light and fluffy; add eggs one at a time.
- 3 Fold in powdered sugar, cocoa powder, flour, vanilla, and salt.
- 4 Fold walnuts and chocolate chips into the batter.
- 5 Transfer batter to pan and bake for 45-50 minutes.
- 6 Cool on rack for 1 hour; invert and release from pan.




