Tunnel of Fudge Cake is a classic, rich chocolate bundt cake with a gooey, fudgy center. First made famous in the 1966 Pillsbury Bake-Off Contest, this cake became a household favorite thanks to its unique self-forming fudge filling. The original recipe used a packaged frosting mix to create the gooey center, but this version captures the same indulgent texture with simple pantry ingredients. Chopped walnuts or pecans add crunch, making this dessert a perfect combination of rich, nutty, and chocolaty goodness.
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Tunnel of Fudge Cake
Tunnel of Fudge Cake FAQ
What is a Tunnel of Fudge Cake?
It’s a chocolate bundt cake with a gooey, molten fudge center that forms naturally while baking—no separate filling needed!
Do I have to use nuts?
Yes, nuts are essential to the structure of the cake. Without them, the center may not set properly.
Can I substitute the frosting mix?
The original recipe relied on a specific Pillsbury frosting mix, which is no longer available. This version uses cocoa powder and powdered sugar to replicate the fudgy texture.
How do I store this cake?
Keep it in an airtight container at room temperature for up to 3 days, or refrigerate for up to a week.
Can I freeze Tunnel of Fudge Cake?
Yes, wrap it tightly in plastic wrap and freeze for up to 3 months. Let it thaw at room temperature before serving.
Food History
The Tunnel of Fudge Cake became famous after winning second place in the 1966 Pillsbury Bake-Off Contest. The recipe, created by Ella Helfrich, skyrocketed the popularity of bundt cakes and even helped increase sales of bundt pans. The original recipe relied on a specific frosting mix, which was later discontinued, but bakers have since developed alternative versions to replicate the gooey center. This cake remains a nostalgic favorite and a must-try for chocolate lovers.
Timeline
- 1966: Ella Helfrich’s Tunnel of Fudge Cake wins second place in the Pillsbury Bake-Off.
- 1970s: Bundt cake popularity rises, largely due to this recipe.
- 1990s: Pillsbury discontinues the frosting mix, prompting bakers to develop homemade versions.
- Today: The Tunnel of Fudge Cake remains a beloved retro dessert.
Recipe Discussion
This Tunnel of Fudge Cake achieves its signature molten center using a high ratio of sugar, eggs, and butter. Unlike traditional bundt cakes, this batter forms a soft, fudgy core as it bakes. Nuts are a crucial ingredient, helping stabilize the cake’s structure while keeping the center gooey. The cake is best enjoyed slightly warm, when the fudge filling is at its softest.
The glaze is optional but adds an extra layer of chocolate flavor. A simple mixture of powdered sugar, cocoa, and milk creates a smooth, glossy topping that enhances the cake’s richness.
Preparation Tips
- Grease and flour the bundt pan thoroughly to prevent sticking.
- Use room-temperature butter and eggs for even mixing.
- Do not overbake—the cake should be set but still have a soft center.
- Let the cake cool in the pan for 1 hour before removing to prevent breaking.
- Use chopped walnuts or pecans for the best structure and texture.
- If using unsalted butter, add ¼ teaspoon salt to balance the flavors.
- Dust with powdered sugar instead of glaze for a lighter finish.
- Serve slightly warm for the best gooey texture.
- Pair with vanilla ice cream for an extra indulgent treat.
- Store leftovers in an airtight container to maintain moisture.
Recommended Kitchen Products
The links below lead to top-rated products on Amazon—if you use our links, we can save more recipes.
- Bundt Pan: Essential for achieving the cake’s signature shape.
- Mixing Bowls: Great for combining wet and dry ingredients separately.
- Hand Mixer: Helps cream butter and sugar smoothly.
- Cooling Rack: Allows the cake to cool evenly before serving.
- Measuring Cups and Spoons: Ensures accurate ingredient measurements.
- Silicone Spatula: Helps scrape the batter evenly into the pan.
- Nut Chopper: Speeds up chopping walnuts or pecans.
- Cake Storage Container: Keeps the cake fresh and easy to transport.
- Pastry Brush: Helps grease the pan evenly for easy release.
- Sifter: Ensures a smooth glaze and prevents lumps.
Serving Suggestions
- Serve warm with a scoop of vanilla ice cream.
- Drizzle with caramel or chocolate sauce for extra indulgence.
- Dust with powdered sugar for a simple, elegant touch.
- Pair with a cup of coffee or espresso for a rich dessert experience.
- Top with whipped cream and fresh berries for a lighter contrast.
- Cut into smaller slices for a bite-sized treat at parties.
- Serve with a glass of milk for a classic chocolate pairing.
- Add a sprinkle of sea salt on top for a sweet-salty contrast.
- Try adding a dash of cinnamon to the batter for extra warmth.
- Garnish with chocolate shavings for a decorative touch.
A Chocolate Lover’s Dream
The Tunnel of Fudge Cake is a true classic, known for its rich chocolate flavor and gooey molten center. With its deep history and unique baking method, this cake remains a favorite among home bakers. Whether served at special gatherings or as a comforting homemade treat, this cake delivers the perfect balance of crunch, softness, and indulgence.
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Tunnel of Fudge Cake Recipe
Tunnel of Fudge Cake
Ingredients
- 1 ½ cups butter or margarine, softened
- 6 eggs
- 1 ½ cups sugar
- 2 cups Pillsbury’s Best All-Purpose Flour
- 3 ¾ cups Pillsbury’s Rich ‘n Easy Double Dutch or Fudge Frosting Mix (save remaining mix for a glaze)
- 2 cups chopped walnuts or pecans
Instructions
- Preheat oven to 350°F. Generously grease the bottom, sides, and tube of a 12-cup BUNDT fluted tube pan or a 10-inch tube (angel food) pan.
- In a large bowl, cream butter. Add eggs, one at a time, beating well after each addition.
- Gradually add sugar, creaming until light and fluffy.
- By hand, stir in flour, dry frosting mix, and walnuts until well blended.
- Pour batter into the prepared pan.
- Bake at 350°F for 60 to 65 minutes.
- Cool in the pan for 1 hour; then remove from the pan. Cool completely before glazing and serving.
- Makes 16-20 servings.
- Glaze:
- Blend in a small bowl until smooth:
- Remaining frosting mix
- 2 ½ teaspoons water
- If necessary, add a few drops of water to make a glaze consistency.
- Spoon over the cooled cake. Store cake under airtight cover.