Rediscover the simple joy of this beloved Cornflake Slice, a timeless no-bake treat that transforms humble pantry ingredients into an irresistibly crunchy, sweet confection that’s perfect for school lunchboxes, afternoon tea, or anytime you need a quick dessert solution. This classic recipe combines the satisfying crunch of cornflakes with rich golden syrup and butter, topped with a smooth layer of chocolate that creates the perfect balance of textures and flavors. The beauty of this slice lies in its simplicity and reliability – it requires no baking, sets quickly, and delivers consistent results that both children and adults absolutely love. Whether you’re introducing a new generation to this nostalgic favorite or revisiting childhood memories, this recipe serves 16 people and proves that sometimes the most beloved treats are also the most wonderfully straightforward.
Ingredients You’ll Need
For the cornflake base:
- 4 cups cornflakes cereal
- 1/2 cup unsalted butter
- 1/4 cup golden syrup (or light corn syrup)
- 1/4 cup brown sugar, firmly packed
- 2 tablespoons honey
- 1 teaspoon vanilla extract
- 1/4 teaspoon salt
For the chocolate topping:
- 200g (7 ounces) milk chocolate, chopped
- 2 tablespoons unsalted butter
- 1 tablespoon golden syrup
- 1/4 teaspoon vanilla extract
For optional enhancements:
- 1/2 cup shredded coconut
- 1/4 cup chopped almonds or peanuts
- 2 tablespoons cocoa powder (for dusting)
- 1/4 cup mini marshmallows
- Extra cornflakes for sprinkling on top
Selecting Quality Ingredients
Choose fresh cornflakes that are crispy and not stale, as they’re the star of this slice. Avoid frosted or heavily flavored varieties that might compete with the simple, classic taste. Golden syrup provides the authentic flavor, but light corn syrup works as a substitute if golden syrup isn’t available in your area.
Preparing Your Pan
Line a 20cm x 30cm (8×12 inch) rectangular pan with baking paper, leaving some overhang for easy removal. Lightly grease the paper with butter to ensure the slice releases perfectly. The right size pan is important for achieving the proper thickness that makes cutting and eating easy.
Creating the Golden Syrup Base
In a medium saucepan over medium heat, combine the butter, golden syrup, brown sugar, honey, and salt. Stir constantly until the butter melts and the mixture begins to bubble gently around the edges, about 3 to 4 minutes. The mixture should be smooth and glossy without any sugar crystals remaining.
Achieving Perfect Consistency
Continue cooking the syrup mixture for another 2 minutes, stirring continuously, until it thickens slightly and coats the back of a spoon. Don’t let it boil vigorously, as this can make the slice too hard once set. Remove from heat and stir in the vanilla extract for aromatic depth.
Incorporating the Cornflakes
Add the cornflakes to the warm syrup mixture and fold gently but thoroughly until every flake is coated with the golden mixture. Work quickly but carefully to avoid crushing the cornflakes while ensuring even distribution of the syrup. The cornflakes should glisten with coating but maintain their individual shape and crunch.
Adding Optional Mix-ins
If using shredded coconut, chopped nuts, or mini marshmallows, fold them in now along with the coated cornflakes. These additions should be distributed evenly throughout the mixture while maintaining the cornflakes as the primary texture component.
Pressing Into the Pan
Transfer the cornflake mixture to your prepared pan and press down firmly and evenly using the back of a spoon or your hands (lightly greased to prevent sticking). The surface should be compact and level, but don’t press so hard that you crush all the cornflakes. A firm, even layer ensures clean cuts and proper setting.
Preparing the Chocolate Topping
While the base sets slightly, prepare the chocolate layer. In a double boiler or microwave-safe bowl, melt the chocolate and butter together, stirring until smooth and glossy. Stir in the golden syrup and vanilla extract to create a silky, pourable chocolate mixture that will set to the perfect consistency.
Applying the Chocolate Layer
Pour the warm chocolate mixture over the pressed cornflake base, using an offset spatula to spread it evenly to all corners. The chocolate should create a smooth, uniform layer that completely covers the base. Work quickly, as the chocolate will begin to set on the cool cornflake base.
Creating Decorative Touches
While the chocolate is still soft, you can create decorative patterns with a fork, sprinkle with extra crushed cornflakes for texture, or dust lightly with cocoa powder. These finishing touches add visual appeal and hint at the delicious flavors within.
Setting and Chilling
Refrigerate the slice for at least 2 hours, or until both the base and chocolate topping are completely set. The slice should feel firm when gently pressed and the chocolate should have a matte finish. Don’t rush this step, as proper setting is crucial for clean cuts.
Perfect Cutting Technique
Using the paper overhang, lift the entire slice from the pan onto a cutting board. Use a sharp knife to cut into squares or rectangles, wiping the blade clean between cuts for the neatest appearance. The slice should cut cleanly without the chocolate cracking or the base crumbling.
Total Preparation Time
This no-bake treat requires approximately 2 hours and 30 minutes from start to finish, including 15 minutes of preparation time, 10 minutes of cooking time, and 2 hours of setting time in the refrigerator. The active working time is minimal, making this perfect for busy schedules or when you need a quick dessert solution.
Serving and Nutritional Information
This recipe yields 16 generous pieces, with each serving containing approximately 215 calories. Each piece provides about 3 grams of protein, 11 grams of fat, and 28 grams of carbohydrates. The slice provides some B vitamins from the fortified cornflakes and energy from the natural sugars, though it’s definitely a treat food meant for occasional enjoyment.
What to Serve With Your Cornflake Slice
This classic slice pairs perfectly with a cup of tea or coffee, where the slight bitterness balances the sweet, crunchy treat beautifully. It’s ideal for school lunchboxes, afternoon tea gatherings, or picnics where you need portable, finger-friendly desserts. Serve alongside fresh fruit for a balanced snack experience.
Expert Tips for Perfect Results
Don’t overheat the syrup mixture, as this can make the final slice too hard and difficult to cut. The mixture should bubble gently but never reach a rolling boil. If you accidentally overheat it, let it cool slightly before adding the cornflakes.
Press the cornflake mixture firmly into the pan, but avoid crushing the flakes completely. You want compression for structural integrity while maintaining the characteristic crunch that makes this slice so appealing. Use steady, even pressure across the entire surface.
Let the chocolate topping cool slightly before pouring to prevent it from melting or sinking into the base layer. The chocolate should be pourable but not hot, creating a distinct top layer that sets properly.
Storage and Freshness
Store the slice in an airtight container in the refrigerator for up to 1 week, with pieces separated by baking paper to prevent sticking. At room temperature, it keeps for 3 to 4 days in cool weather. The texture remains best when stored in cool conditions that keep the chocolate firm.
Seasonal Variations and Themes
Create holiday versions by using different chocolate types or adding themed decorations. White chocolate with red and green sprinkles for Christmas, or dark chocolate with orange zest for Halloween. The basic recipe adapts well to seasonal themes while maintaining its classic appeal.
Make-Ahead Benefits
This slice actually improves after a day as the flavors meld and the texture settles perfectly. Make it up to 3 days in advance for parties or events. The convenience of make-ahead preparation makes it perfect for busy entertaining schedules or meal planning.
Dietary Adaptations
For dairy-free versions, use dairy-free butter and chocolate alternatives. Gluten-free cornflakes ensure the slice is suitable for those with gluten sensitivity. Sugar-free versions can use sugar-free golden syrup and chocolate, though the texture may be slightly different.
Troubleshooting Common Issues
If your slice is too soft and won’t hold together, you may not have pressed it firmly enough or the syrup mixture wasn’t thick enough. If too hard, the syrup was likely overcooked or cooked too long. If the chocolate cracks when cutting, let it come to room temperature for 10 minutes before cutting.
Creative Presentation Ideas
Cut into fun shapes using cookie cutters for children’s parties, or create elegant rectangular portions for adult gatherings. Package individual pieces in clear cellophane bags for party favors or bake sale items. The simple appearance can be dressed up with colorful packaging or themed decorations to suit any occasion.
