Biscoff Caramel Slice Recipe

The first bite of this Biscoff Caramel Slice is pure heaven—crunchy, gooey, and sweet all at once. The layers of buttery biscuit base, smooth caramel, and creamy Biscoff topping melt together perfectly. I made it for a family movie night, and it disappeared in minutes.

There’s just something about that caramel and Biscoff mix—it’s rich but not too heavy. The smell alone makes the whole kitchen feel cozy and warm. It’s the kind of dessert that looks fancy but is super easy to make.

If you love caramel treats with a little crunch, this recipe is for you. Let’s make this Biscoff Caramel Slice together—it’s simple, delicious, and perfect for sharing with anyone who loves a little sweetness.

Why You’ll Love This Recipe

• No-Bake Simplicity: The base and topping require no baking, making this perfect for warm days.
• Three Delicious Layers: Crunchy biscuit base, creamy caramel, and silky white chocolate create the perfect combination.
• Uses Biscoff Throughout: Both crushed biscuits and Biscoff spread give this slice its signature flavor.
• Make-Ahead Friendly: Prepare a day ahead and store in the fridge until ready to serve.
• Perfect for Sharing: Cut into generous squares for gatherings or smaller pieces for coffee time.

What You Need to Know Before You Start

Prep Time & Cook Time:

• Prep Time: 20 minutes
• Cook Time: 10 minutes (for caramel)
• Chilling Time: 2-3 hours
• Total Time: About 3 hours

Servings: This recipe makes one 9×9 inch pan, yielding 16 medium squares or 25 smaller pieces. Perfect for a family gathering or potluck.

Difficulty: Easy to moderate. The caramel requires attention while cooking, but the rest is straightforward assembly.

Required Kitchen Tools

• 9×9 inch square baking pan
• Mixing bowls (medium and large)
• Heavy-bottomed saucepan
• Wooden spoon or heat-resistant spatula
• Food processor or plastic bag with rolling pin
• Parchment paper
• Microwave-safe bowl or double boiler

Ingredients

This recipe combines the beloved flavor of Biscoff cookies with homemade caramel and white chocolate. Each layer brings its own texture and sweetness to create a memorable dessert.

For the Biscoff Base:

• 300g Biscoff biscuits (about 2 cups crushed)
• 100g butter, melted

For the Caramel Layer:

• 1 can (397g) condensed milk
• 100g brown sugar
• 100g butter
• 100g Biscoff spread
• 2 tablespoons treacle or golden syrup
• Pinch of salt

For the White Chocolate Topping:

• 200g white chocolate, chopped
• Extra Biscoff biscuits for decoration (optional)

Variations for Biscoff Caramel Slice

• Add Crunch: Mix chopped nuts like pecans or almonds into the base layer.
• Dark Chocolate Drizzle: Melt dark chocolate and drizzle over the white chocolate layer for contrast.
• Extra Biscoff: Swirl additional Biscoff spread through the caramel layer before it sets.
• Sea Salt Finish: Sprinkle flaky sea salt over the white chocolate for a sweet-salty combination.
• Coffee Boost: Add a teaspoon of instant coffee to the caramel for deeper flavor.

How to Make Biscoff Caramel Slice: Step-by-Step Instructions

1. Prepare Your Pan

Line your 9×9 inch pan with parchment paper, leaving some hanging over the edges. This makes it easy to lift out the finished slice.

2. Make the Biscoff Base

Crush the Biscoff biscuits into fine crumbs using a food processor. If you do not have one, place biscuits in a sealed plastic bag and crush with a rolling pin. Mix the crumbs with melted butter until the mixture looks like wet sand. Press firmly into the bottom of your prepared pan, creating an even layer. Place in the refrigerator while you make the caramel.

3. Prepare the Caramel Layer

In a heavy-bottomed saucepan, combine condensed milk, brown sugar, butter, Biscoff spread, treacle, and a pinch of salt. Place over medium-low heat and stir constantly with a wooden spoon. The mixture will bubble and thicken as it cooks. Continue stirring for 8-10 minutes until the caramel turns a rich golden color and pulls away slightly from the sides of the pan. Be careful not to stop stirring, as the mixture can burn easily.

4. Assemble the Caramel Layer

Remove the caramel from heat and let it cool for 2 minutes. Pour the warm caramel over the chilled biscuit base, spreading it evenly with a spatula. Tap the pan gently on the counter to remove any air bubbles. Return to the refrigerator for at least 1 hour until the caramel is firm.

5. Add the White Chocolate Topping

Melt the white chocolate using a microwave in 30-second intervals, stirring between each burst, or use a double boiler. Once smooth and melted, pour over the set caramel layer. Spread evenly with a spatula. If desired, crumble a few extra Biscoff biscuits on top for decoration while the chocolate is still soft.

6. Final Chill and Cut

Refrigerate the slice for at least 1-2 hours until the white chocolate is completely set. When ready to serve, lift the slice out using the parchment paper edges. Use a sharp knife dipped in hot water (and wiped dry) to cut clean squares.

Serving and Decoration

This Biscoff Caramel Slice looks beautiful with minimal effort. The three distinct layers create visual appeal, while the contrast of golden caramel and white chocolate is eye-catching.

Presentation Ideas:

• Dust with crushed Biscoff biscuits before serving
• Drizzle with melted Biscoff spread in a zigzag pattern
• Serve on a white plate with a cup of coffee or tea
• Stack two small pieces for an impressive height
• Garnish each square with a whole Biscoff cookie standing upright

Storing Biscoff Caramel Slice

• Room Temperature: Not recommended, as the layers may become too soft.
• Refrigerator: Store in an airtight container for up to 5 days. The slice stays fresh and the layers remain distinct.
• Freezer: Wrap individual pieces in plastic wrap, then place in a freezer bag for up to 2 months. Thaw in the refrigerator overnight before serving.

Tips and Tricks for Success

• Stir Constantly: The caramel needs constant attention to prevent burning. Never leave it unattended.
• Use Quality Chocolate: Good white chocolate makes a difference in flavor and texture.
• Pack the Base Firmly: A well-compressed base holds together better when sliced.
• Let Each Layer Set: Do not rush the chilling process. Firm layers cut more cleanly.
• Sharp Knife for Cutting: A hot, clean knife creates professional-looking squares.
• Butter Temperature: Make sure your butter is properly softened for the caramel to ensure smooth mixing.

Nutrition

Nutrient	Per Serving (1/16 of recipe)
Calories	320
Total Fat	18g
Saturated Fat	11g
Cholesterol	35mg
Sodium	180mg
Total Carbohydrates	38g
Dietary Fiber	0.5g
Sugars	28g
Protein	4g

Nutritional values are approximate and may vary based on specific ingredients used.

Biscoff Caramel Slice FAQs

Can I use a different type of biscuit? Yes, digestive biscuits or graham crackers work well as substitutes, though the flavor will be different from traditional Biscoff.

Why is my caramel not setting? The caramel needs to cook long enough to thicken properly. Make sure you stir constantly and cook until it pulls away from the pan sides. If too soft, return to heat briefly.

Can I make this without Biscoff spread? The Biscoff spread adds essential flavor to the caramel. You could use smooth peanut butter or another cookie butter, but the taste will change.

How do I prevent the white chocolate from cracking? Let the caramel layer cool slightly before adding chocolate, and avoid refrigerating immediately after adding the chocolate layer. Let it set at room temperature first.

Can I double this recipe? Absolutely. Use a 9×13 inch pan and double all ingredients. The layers may be slightly thinner but equally delicious.

Conclusion

This Biscoff Caramel Slice brings together everything you love about Biscoff cookies in one impressive dessert. The buttery biscuit base provides crunch, the homemade caramel adds richness, and the white chocolate creates a smooth finish. Whether you are making this for a special occasion or simply treating yourself, the combination of flavors and textures makes every bite worthwhile. The recipe is straightforward enough for beginners while delivering results that look and taste professional.