There is something truly irresistible about the 4 Ingredient Choc Hazelnut Slice Recipe that instantly brings joy with every bite. Combining the crunch of digestive biscuits, the creamy richness of condensed milk, the deep, luscious flavor of dark chocolate, and the nutty crunch of toasted hazelnuts, this no-fuss slice is the perfect treat for any occasion. Whether you’re after a quick weekend bake or a stunning dessert to impress friends, this slice is an absolute winner that never fails to satisfy chocolate lovers and snack enthusiasts alike.

Ingredients You’ll Need
With only four simple ingredients, this recipe is delightfully straightforward yet packed with flavor. Each ingredient plays an essential role in creating the perfect balance of texture and taste, turning humble pantry staples into an unforgettable dessert.
- 250g digestive biscuits: provides a crunchy, sturdy base that holds the slice together beautifully.
- 395g sweetened condensed milk (1 can): acts as the sweet, creamy binder that brings everything into harmony.
- 200g dark chocolate, melted: delivers a rich, smooth chocolate layer that adds depth and indulgence.
- 100g toasted hazelnuts, roughly chopped: adds a toasty, crunchy contrast that elevates the slice’s texture and flavor complexity.
How to Make 4 Ingredient Choc Hazelnut Slice Recipe
Step 1: Prep Your Tin
Start by lining an 8×8 inch baking tin with parchment paper. This simple step ensures your slice lifts out easily once set, making the final cut clean and fuss-free.
Step 2: Mix Base Ingredients
In a large mixing bowl, combine the crushed digestive biscuits with the sweetened condensed milk. Stir them together until every crumb is well coated. This mixture forms the chewy, sweet foundation that keeps the slice wonderfully moist yet textured.
Step 3: Add Hazelnuts to the Base
Fold in half of the chopped toasted hazelnuts carefully. These nuts will give bursts of flavor and crunch in every bite, so don’t skimp here!
Step 4: Press Mixture into Tin
Using a spatula or the back of a spoon, press the biscuit and condensed milk mixture firmly and evenly into the prepared tin. Getting it packed down well helps ensure the slice cuts beautifully without falling apart.
Step 5: Spread the Chocolate
Pour the melted dark chocolate evenly over the pressed base. Use the back of a spoon to spread it into a smooth, glossy layer. This rich chocolate topping is the decadent crown for your slice.
Step 6: Sprinkle Remaining Hazelnuts
Generously scatter the leftover chopped hazelnuts over the chocolate while it’s still soft to add an inviting crunch and visual appeal.
Step 7: Chill Until Set
Place the tin in the refrigerator for at least two hours, allowing the chocolate to harden and the slice to firm up perfectly before serving.
Step 8: Slice and Serve
Lift the slice from the tin using the parchment paper edges and place it on a cutting board. Run a hot knife through the slice to create clean squares. Now it’s time to enjoy every delicious mouthful!
How to Serve 4 Ingredient Choc Hazelnut Slice Recipe
Garnishes
Consider adding a sprinkle of flaky sea salt or a light dusting of cocoa powder for an elegant touch. Fresh mint leaves or a dollop of whipped cream can also be delightful accompaniments to bring brightness to each bite.
Side Dishes
This slice pairs beautifully with a cup of rich coffee or a creamy latte, making it an ideal afternoon treat. For a festive twist, serve alongside fresh berries to balance the richness with a hint of natural tartness.
Creative Ways to Present
Try cutting the slice into bite-sized squares and presenting them on a tiered dessert stand at your next gathering. Wrapping individual pieces in parchment paper tied with twine also makes for charming homemade gifts perfect for sharing the love.
Make Ahead and Storage
Storing Leftovers
You can keep any leftover slices fresh by storing them in an airtight container in the refrigerator. They will stay delicious and firm for up to a week, making them great for enjoying over time without losing texture or flavor.
Freezing
If you need to store the slice for longer, freezing is an excellent option. Wrap each square tightly in plastic wrap and place them in a freezer-safe container. When properly frozen, they will maintain their quality for up to three months.
Reheating
No reheating is necessary for this slice since it’s best enjoyed chilled. However, if you prefer a slightly softer texture, you can let the squares sit at room temperature for 10-15 minutes before serving to bring out the chocolate’s luscious melt-in-your-mouth quality.
FAQs
Can I use other types of nuts instead of hazelnuts?
Absolutely! Walnuts, almonds, or pecans can be wonderful substitutes that bring their own distinct flavors and textures to the slice. Just make sure to toast them lightly to maximize their aroma.
Is it possible to make this recipe dairy-free?
To make it dairy-free, try using a coconut condensed milk alternative and dairy-free dark chocolate. The biscuit base might need checking to ensure it’s vegan-friendly as well. It’s a tasty way to adapt the recipe for special dietary needs.
How do I crush the digestive biscuits evenly?
The easiest way is to place biscuits in a sturdy plastic bag and use a rolling pin to gently crush them to your desired size. Aim for mostly small crumbs with some chunkier pieces for texture.
Will this slice be too sweet with condensed milk and chocolate?
Actually, the bittersweet dark chocolate and toasty hazelnuts balance the sweetness beautifully. If you prefer less sweetness, consider using a chocolate with higher cocoa content around 70% or more.
Can I make this slice without refrigeration?
Refrigeration is key for setting the chocolate and firming up the slice. Without chilling, the slice won’t hold together as well and the chocolate layer may remain too soft. Trust the fridge for the best results!
Final Thoughts
There is nothing quite like the effortless magic of the 4 Ingredient Choc Hazelnut Slice Recipe to brighten your day or impress your friends with minimal fuss. Its straightforward ingredients and quick assembly belie the incredible depth of flavor and delightful texture it delivers. Give it a try soon—you might just find it becoming your new go-to treat for any time cravings strike!
Print
4 Ingredient Choc Hazelnut Slice Recipe
- Prep Time: 15 minutes
- Cook Time: 2 minutes (melting chocolate)
- Total Time: 2 hours 17 minutes (including chilling)
- Yield: 16 squares
- Category: Dessert
- Method: No-Cook
- Cuisine: Western
- Diet: Vegetarian
Description
This 4 Ingredient Choc Hazelnut Slice is a quick and delicious no-bake treat combining crunchy digestive biscuits, creamy condensed milk, rich dark chocolate, and toasted hazelnuts. Perfect for an easy dessert or snack, it requires minimal prep and just chilling to set.
Ingredients
Base
- 250g digestive biscuits, crushed
- 395g sweetened condensed milk (1 can)
Topping
- 200g dark chocolate, melted
- 100g toasted hazelnuts, roughly chopped
Instructions
- Prepare the tin: Line an 8×8 inch baking tin with parchment paper to prevent sticking and make removal easier.
- Mix base ingredients: In a mixing bowl, combine the crushed digestive biscuits and the sweetened condensed milk, stirring well until the biscuits are evenly coated.
- Add hazelnuts to base: Stir half of the chopped toasted hazelnuts into the biscuit mixture to incorporate texture and flavor.
- Press mixture into tin: Transfer the biscuit mixture into the lined tin and press it firmly and evenly using a spatula or the back of a spoon to form a compact base layer.
- Pour melted chocolate: Pour the melted dark chocolate evenly over the biscuit base and spread it smoothly to cover the entire surface.
- Top with remaining hazelnuts: Sprinkle the rest of the toasted hazelnuts evenly on top of the chocolate layer for added crunch and garnish.
- Chill to set: Place the tin in the refrigerator and chill for at least 2 hours or until the slice is fully set and firm.
- Slice and serve: Once set, lift the slice out of the tin using the parchment paper, slice into 16 squares with a hot knife for clean cuts, and serve.
Notes
- Ensure the hazelnuts are toasted to enhance their flavor and crunch.
- Press the biscuit mixture firmly to help the slice hold together when cut.
- Use a hot knife (dip in hot water and wipe dry) for smooth slicing without cracking the chocolate.
- This slice should be stored in the refrigerator and consumed within 5 days for best freshness.
- The sweetness and richness can be adjusted by choosing milk or darker chocolate as preferred.

