Chocolate Toffee Marshmallow Slice with Butterscotch Swirl
This Chocolate Toffee Marshmallow Slice combines chewy marshmallows, crunchy biscuits, and rich caramel beneath a swirled chocolate topping.
Why You Will Love and Enjoy This Chocolate Toffee Marshmallow Slice
- No oven needed, making it perfect for warmer days or busy holiday baking.
- Every bite combines crunchy, chewy, creamy, and chocolatey textures.
- Easy to make ahead and ideal for sharing at gatherings and celebrations.
An Unbaked Chocolate Slice Loaded with Crunch and Chew.
Print
Chocolate Toffee Marshmallow Slice
- Prep Time: 25 minutes
- Refrigerate: 3 hours
- Cook Time: 10 minutes
- Total Time: 3 hours 35 minutes
- Yield: 24 to 30 squares depending on size 1x
- Category: Appetizers and Snacks
- Method: Easy Cooking
Description
This Chocolate Toffee Marshmallow Slice is one of those treats that disappear from the dessert table surprisingly quickly. With crunchy biscuits, chewy marshmallows, sweet fruit mix, creamy caramel, and a marbled chocolate topping, every bite has a little bit of everything.
Ingredients
- 230 g butter
- 50 ml sugar
- 128 g Werther’s Original Fudge Caramels, chopped
- 50 ml corn syrup
- 40 ml dark Dutch cocoa powder
- 350 g Marie biscuits, broken into chunky pieces
- 150 g crushed Weetabix
- 150 g white marshmallows, quartered or use mini marshmallows
- 250 g Safari cake fruit mix
- 300 g Hershey’s Butterscotch Chipits
- 400 g milk or brown chocolate, chopped
Instructions
- Line a 14 x 10-inch baking tin with parchment paper, leaving some overhang to make lifting the slice out easier later.
- In a large saucepan over low heat, melt the 230 g butter, 50 ml sugar, 128 g chopped Werther’s Original Fudge Caramels, 50 ml corn syrup, and 40 ml dark Dutch cocoa powder.
- Stir often until the mixture is smooth and the caramels have fully melted. Don’t rush this step, or the caramel may catch on the bottom.
- In a large mixing bowl, combine the 350 g Marie biscuit pieces, 150 g crushed Weetabix, and 150 g quartered marshmallows, or if you prefer, you can use mini marshmallows.
- Pour the warm caramel cocoa mixture over the biscuit mixture and stir until everything is evenly coated.
- Transfer the mixture to the prepared tin and press it down firmly using the back of a spoon or an offset spatula, as it helps the slice hold together better when cut.
- Sprinkle the 250 g Safari cake fruit mix evenly over the top and gently press it into the surface.
- Place the 400 g chocolate in one microwave-safe bowl and the 300 g Hershey’s Butterscotch Chipits in another microwave-safe bowl.
- Microwave each bowl separately in 30-second intervals, stirring between each interval until fully melted and smooth.
- Pour the melted chocolate over the slice, spreading it evenly.
- Spoon the melted butterscotch over the chocolate and use a skewer or knife to create swirls and patterns.
- Refrigerate for at least 3 hours, or until completely set.
- Lift from the tin using the parchment paper and cut into squares (± 1″ cubes) with a sharp knife.
Notes
Created, prepared, tried, and tested by Esme Slabs: SA Tasty Recipes – Saffas Daily Recipes and EsmeSalon Homemade Recipes
Additional Information
- Pressing the fruit mix lightly into the base before adding the chocolate topping helps prevent pieces from falling off when slicing.
- The marshmallows do not melt into the mixture. They don’t. They stay soft and chewy, adding texture throughout the slice.
- Separating the chocolate and butterscotch into different bowls before melting creates cleaner swirls and a more attractive finish.
- Firmly press the base into the tin. Compacting it well helps the slice hold together when cut.
- Using semi-sweet chocolate instead of milk chocolate helps balance the sweetness; if you do not like it overly sweet, you can decide.
- Can I use mini marshmallows? Yes. Mini marshmallows work perfectly and save preparation time.
- Can I leave out the fruit mix? Absolutely. Add chopped nuts, dried cranberries, or extra biscuits instead.
- Can I make this ahead? Yes. It’s actually better the next day after the flavours have settled together.
Storage
- How long can it be stored and how? Store in an airtight container in the refrigerator for up to 10 days. Separate layers with parchment paper if stacking.
- Can this be frozen? Yes. Freeze in an airtight container for up to 3 months. Thaw overnight in the refrigerator before serving.
Ingredient Substitutions
- Marie biscuits: Digestive biscuits or Graham crackers
- Weetabix: Crushed corn flakes or bran flakes
- Werther’s Fudge Caramels: Soft caramel candies
- Safari cake fruit mix: Mixed dried fruit, raisins, or chopped dried apricots
- Butterscotch Chipits: White chocolate chips or caramel chips
- Milk chocolate: Semi-sweet or dark chocolate
A handful of marshmallows completely changes the texture of this chocolate slice. This slice brings together caramel, crunch, and creamy swirls in every square.
Chocolate Toffee Marshmallow Slice is the kind of dessert that offers something different in every bite. The combination of crunchy biscuits, soft marshmallows, chewy fruit, smooth caramel, and swirled chocolate creates a treat that’s both satisfying and memorable. It’s easy to prepare ahead, simple to serve, and looks impressive on any dessert table. For anyone who enjoys rich chocolate desserts with plenty of texture, this slice is well worth making.
Weetabix is a breakfast cereal produced by Weetabix Limited in the United Kingdom. It comes in the form of palm-sized wheat biscuits. Variants include organic and Weetabix Crispy Minis versions. The UK cereal is manufactured in Burton Latimer, Northamptonshire, and exported to over 80 countries.
Previously made the Chocolate and Mixed Fruit Triangles, and now adapted once again.
Thanks for dropping in and checking out the recipes and what’s on offer.
Thanks for dropping in and checking out the recipes and what’s on offer.
If you try out this delightful recipe, please let me know, rate it, and tag me on Instagram at @_esmesalon. I’m excited to see your amazing recreations, and I’m hooked on those mouthwatering photos!
We happily share our tasty and fantastic recipes and are excited to spread some love by sharing our posts at these awesome Linky Parties.
Copyright © 2026 esmesalon.com – All rights reserved.
These sound delicious! What a lovely combination of flavors.
Thank you so much for popping in Joanne. I love to experiment and some you win and some NOT, but this one turned out delicious. Hope you will also enjoy it.