Marshmallow Crunch Traybake

By Ashley • July 11, 2026

There’s just something about a no-bake treat that screams “easy comfort” to me. I love whipping up something delicious without even turning on the oven! This Marshmallow Crunch Traybake is one of those recipes that brings back so many happy memories. It’s perfectly sweet, wonderfully chewy, and so simple to make that it quickly became a household favorite. It’s the perfect dessert when you need a quick pick-me-up or a treat to share with friends.

Marshmallow Crunch Traybake - finished dish

Why You’ll Love This Marshmallow Crunch Traybake

  • It’s incredibly easy to make with no baking required – perfect for beginners!
  • You get the best of all worlds: crunchy biscuit base, chewy marshmallows, and a hint of sweet fruit.
  • It’s a fantastic make-ahead dessert, ideal for parties, potlucks, or just a sweet snack throughout the week.
  • The flavor combination is simply irresistible – a true crowd-pleaser every time.

Ingredients You’ll Need

  • Digestive biscuits: These are a classic British biscuit that are perfect for no-bake bases. If you can’t find them, Graham Crackers are a great substitute and will give you a similar texture and flavor.
  • Brown sugar: This adds a lovely caramel note and helps bind the base together.
  • Dessicated coconut: Adds a wonderful texture and a subtle tropical flavor. Don’t skip it!
  • Glacé cherries: Also known as candied cherries, these add little bursts of fruity sweetness and a pop of color. Make sure to quarter them so they distribute evenly.
  • Golden syrup or honey: Both work beautifully to sweeten the base and help hold it all together. Golden syrup has a unique, rich flavor, but honey is a perfect stand-in.
  • Soft toffees or caramels: These melt down to create a sticky, delicious coating for your marshmallows. Use individually wrapped caramels for ease.
  • Marshmallows: The star of the show! Quartering them ensures they melt evenly and spread nicely over the base.

How to Make Marshmallow Crunch Traybake Step by Step

First things first, let’s get your pan ready. You’ll want to line a 20cm/8 inch square tin with baking parchment. This makes it super easy to lift out your traybake later. Trust me, a little parchment now saves a lot of scraping later!

For the base, grab a saucepan and combine your butter, golden syrup (or honey), and brown sugar. Put this over a gentle heat. You just want to melt the butter and dissolve the sugar, stirring occasionally. Once it’s all smooth and lovely, take it off the heat. Then, stir in your crushed biscuits, dessicated coconut, and those pretty quartered glacé cherries. Mix it all up until everything is coated. This is where the magic starts! Press this mixture firmly into your prepared tin. Use the back of a spoon or your hands to really compact it. Set it aside while you work on the topping.

Now for the best part – the marshmallow topping! Set up a double boiler. This means putting your soft toffees and butter in a heatproof bowl set over a saucepan of simmering water. You want that gentle heat to melt them slowly and smoothly. Stir it all together until it’s completely melted and glossy. Then, gently fold in your quartered marshmallows. Don’t worry if they don’t melt completely; you want some of those lovely soft chunks. Spread this glorious marshmallow mixture evenly over your biscuit base. Pop the whole thing into the fridge for a couple of hours. This setting time is crucial, so be patient! Once it’s firm, cut it into squares and enjoy your delicious creation!

Marshmallow Crunch Traybake - step by step

My Top Tips for Success

  • I always crush my digestive biscuits in a Ziploc bag with a rolling pin. It’s a great way to get out some stress!
  • In my experience, using a good quality baking parchment makes all the difference for easy removal.
  • Trust me on this one: don’t rush the melting process for the base ingredients or the topping. Gentle heat is key for a smooth consistency.
  • When pressing the base into the tin, use firm, even pressure. This helps it hold together beautifully when you cut it.
  • Make sure your glacé cherries are quartered small enough so they distribute evenly throughout the base.
  • Be patient with the chilling time. It needs those couple of hours in the fridge to set properly, making it easy to cut and enjoy.

Common Mistakes to Avoid

  • Not lining the tin: This makes it very difficult to remove the traybake cleanly. Always use baking parchment!
  • Overheating the base ingredients: If you boil the butter, syrup, and sugar too vigorously, it can affect the texture of the base. Keep the heat gentle.
  • Not crushing biscuits finely enough: Large chunks can make the base crumbly and hard to cut. Aim for fine crumbs.
  • Not pressing the base firmly: A loose base will fall apart when you try to slice it. Press it down well.
  • Cutting before it’s fully set: The topping will be sticky and messy if not properly chilled. Give it the full two hours in the fridge.

How to Store Marshmallow Crunch Traybake

  • Countertop: 2-3 days in an airtight container.
  • Refrigerator: Up to 1 week in an airtight container.
  • Freezer: Up to 1 month in an airtight container, layered with parchment paper. Thaw in the fridge or at room temperature.

Frequently Asked Questions

What can I use instead of digestive biscuits?

Graham Crackers are the best substitute for digestive biscuits. You can also use other plain, crisp biscuits like shortbread or even vanilla wafers if you prefer.

Can I use different fruits?

Absolutely! While glacé cherries are traditional, you could try dried cranberries, raisins, or even chopped candied ginger for a different flavor profile.

Do I have to use a double boiler for the topping?

Using a double boiler ensures gentle, even melting of the toffees and butter, preventing them from burning. You can melt them in a microwave in short bursts, stirring frequently, but be very careful not to overheat.

How do I cut clean squares?

Make sure the traybake is fully chilled and firm. Use a sharp knife and clean it with a hot, damp cloth between cuts for the neatest squares.

Can I make this ahead of time?

Yes, this Marshmallow Crunch Traybake is perfect for making ahead! It needs a couple of hours to set, so it’s ideal to prepare the day before you plan to serve it.

I hope you give this delightful Marshmallow Crunch Traybake a try! It’s such a simple, satisfying treat that always brings a smile to people’s faces. Let me know in the comments below if you make it and what you think!

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Marshmallow Crunch Traybake

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A delightful no-bake treat with a crunchy biscuit base, sweet glacé cherries, and a gooey marshmallow-caramel topping.

  • Prep Time: 20
  • Cook Time: 5
  • Total Time: 145
  • Yield: 16 servings 1x
  • Category: Dessert
  • Method: No-Bake
  • Cuisine: British
  • Diet: Vegetarian

Ingredients

Scale
  • 5 oz or 140g butter
  • 2 oz or 55g brown sugar
  • 10 oz or 280g Digestive biscuits, crushed (Graham Crackers)
  • 2 oz or 55g dessicated coconut
  • 2 oz or 55g glacé cherries, quartered (candied cherries)
  • 1 tbsp golden syrup or honey
  • 2 oz or 55g soft toffees or caramels
  • 2 oz or 55g butter
  • 8 oz or 225g marshmallows, quartered

Instructions

  1. Line a 20cm/8 inch square tin with baking parchment.
  2. Put the 140g butter, 1 tbsp golden syrup or honey, and 55g brown sugar in a saucepan.
  3. Place the saucepan over a gentle heat.
  4. Stir the mixture until the butter has melted and the sugar has dissolved.
  5. Remove the saucepan from the heat.
  6. Stir in the 280g crushed digestive biscuit crumbs, 55g dessicated coconut, and 55g quartered glacé cherries.
  7. Press the mixture firmly into the prepared tin.
  8. Set the tin aside.
  9. Place the 55g soft toffees or caramels and 55g butter in a heatproof bowl.
  10. Set the bowl over a saucepan of simmering water (double boiler).
  11. Heat gently until the toffees and butter have melted and are smooth.
  12. Mix in the 225g quartered marshmallows.
  13. Spread the marshmallow topping evenly over the biscuit base in the tin.
  14. Put the tin into the fridge for a couple of hours to set completely.
  15. Cut into squares.
  16. Serve and enjoy!

Notes

Ensure biscuits are finely crushed for a cohesive base.
Press the base very firmly into the tin.
Clean your knife between cuts for neat squares.
Allow full chilling time for the best texture.

Nutrition

  • Serving Size: 1 square
  • Calories: 285
  • Sugar: 22
  • Sodium: 80
  • Fat: 16
  • Saturated Fat: 10
  • Carbohydrates: 33
  • Fiber: 1
  • Protein: 2
  • Cholesterol: 35

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About the Baker

Hi, I'm Ashley!

I'm Ashley, a California home baker sharing cozy, tested recipes that actually work in a normal home oven — written so beginners get them right the first time. So glad you're here!

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