Tunnel of Fudge Cake

This layered Bundt cake bakes a ring of chocolate cheesecake directly inside the batter, giving every slice a dense, fudgy center under a coat of warm chocolate ganache.
Key Ingredients
The cake base pairs a standard chocolate cake mix with room-temperature coffee and canola oil for moisture. The cheesecake filling blends softened cream cheese, sugar, corn syrup, an egg, and melted semisweet chocolate chips with a splash of heavy cream. For the topping, additional chocolate chips melt directly into warm cream to create a smooth ganache.
Baking and Assembling
Mix the cake batter and pour it into a greased, floured Bundt pan. Spoon the prepared chocolate cream cheese filling in a neat ring over the top, making sure it stays clear of the center tube and outer edges. Bake until a tester comes out clean, then rest the pan briefly before inverting the cake onto a plate. Once completely cool, finish with the freshly stirred ganache and allow it to set before slicing.
Tunnel of Fudge Cake — Recipe
Ingredients
Cheesecake Filling
- 1 cup semisweet chocolate chips
- 1 (8 oz) package cream cheese, room temperature
- 2 tablespoons granulated sugar
- 2 tablespoons corn syrup
- 1 egg
- 1 tablespoon heavy cream
Cake
- 1 (15.25 oz) chocolate cake mix
- 1 cup coffee, room temperature
- 1/2 cup canola oil
- 3 eggs
Ganache
- 2/3 cup heavy cream
- 2/3 cup semisweet chocolate chips
Instructions
- Heat the oven to 350°F. Grease and flour a 10-inch Bundt pan.
- Beat the cream cheese until smooth. Combine with the sugar, corn syrup and filling egg.
- Melt the filling chocolate in 30-second microwave bursts, stirring after each burst. Cool for 3 minutes, then stir the melted chocolate and the 1 tablespoon heavy cream into the cream-cheese mixture.
- Mix the cake mix, room-temperature coffee, canola oil and the 3 cake eggs until combined. Transfer cake batter to the prepared pan. Spoon the cheesecake mixture in a ring onto the batter, keeping it away from the outer pan walls and center tube.
- Bake 35–40 minutes, until a toothpick comes out clean.
- Cool in the pan for 10–15 minutes, invert onto a serving plate, and let the cake finish cooling.
- For the ganache, microwave its cream until it begins bubbling. Add its chocolate chips, leave for 1–2 minutes, then stir until smooth. Drizzle onto the cooled, inverted cake.
- Let the ganache set at least 30 minutes before serving.
Recipe notes
- Serves 8–10. Prep: 25 minutes. Bake: 35–40 minutes at 350°F. Use a greased, floured 10-inch Bundt pan.
- The filling is chocolate cheesecake, not molten lava or stretchy cheese.