Description
This Boston Cream Fudge recipe combines a rich, creamy white chocolate layer with a smooth cocoa swirl, finished with a semi-sweet chocolate ganache topping. Perfectly sweet and velvety, this dessert offers a delightful blend of textures and flavors inspired by the classic Boston cream pie, made into a luscious fudge treat suitable for sharing.
Ingredients
Scale
Fudge Base
- 2 cups granulated sugar
- 3/4 cup unsalted butter
- 2/3 cup heavy cream
- 1/4 cup light corn syrup
- 6 ounces white baking chocolate, chopped
- 7 ounces marshmallow cream
- 1 teaspoon vanilla extract
Cocoa Swirl
- 1 1/2 tablespoons unsweetened cocoa powder, sifted
Chocolate Topping
- 1 cup semi-sweet chocolate chips
- 1 1/2 tablespoons vegetable oil
Instructions
- Prepare Pan: Line an 8×8-inch baking pan with parchment paper leaving an overhang to easily lift the fudge later and lightly coat with nonstick spray for effortless removal.
- Cook Base Mixture: In a heavy saucepan over medium heat, combine the granulated sugar, unsalted butter, heavy cream, and light corn syrup. Stir constantly until the mixture reaches a rolling boil.
- Boil to Soft Ball Stage: Continue boiling while stirring for 4 to 5 minutes, until the temperature reaches between 235°F and 240°F (soft ball stage), which ensures proper fudge consistency.
- Add White Chocolate and Marshmallow Cream: Remove the saucepan from heat and stir in the chopped white baking chocolate until fully melted and smooth. Then mix in the marshmallow cream and vanilla extract until the mixture is homogenous.
- Pour White Layer: Pour about three-quarters of this white chocolate mixture into the prepared baking pan, spreading evenly.
- Prepare Cocoa Swirl: To the remaining fudge mixture in the saucepan, add the sifted unsweetened cocoa powder. Whisk until completely smooth and then spoon this chocolate mixture over the white layer in the pan. Use a toothpick to gently swirl the cocoa layer to create a marbled effect.
- Cool and Set: Allow the fudge to cool at room temperature for 1 hour, then refrigerate it for an additional hour until the fudge is fully set and firm.
- Cut into Squares: Use the parchment paper overhang to lift the fudge from the pan and place on a cutting board. Cut into approximately 25 squares.
- Melt Chocolate Topping: In a microwave-safe bowl, melt the semi-sweet chocolate chips with vegetable oil in short intervals, stirring between each, until smooth and shiny.
- Dip and Set Chocolate Tops: Dip the top of each fudge square into the melted chocolate ganache and place them on parchment or a wire rack to set completely before serving.
Notes
- Ensure the sugar mixture reaches the proper temperature (235-240°F) for the fudge to set correctly; use a candy thermometer for precision.
- The marshmallow cream adds a unique smooth texture and sweetness; do not substitute with marshmallows for best results.
- Swirling the cocoa mixture into the white fudge creates a beautiful marbled effect—do not overmix to maintain distinct layers.
- Let the fudge cool completely before cutting to avoid melting or crumbling.
- Dipping the fudge tops in melted chocolate adds an elegant finish and extra chocolate flavor.
