Name: Christmas Peppermint Slice Recipe
Prep time: 20 min
Cook time: 5 min
Total time: 4 h 25 min
Cuisine: Western
Ingredients: 250g butter; ¼ cup cocoa powder; 1 cup brown sugar; 1 teaspoon vanilla extract; ½ cup milk; 2 packets (250g each) Marie or wine biscuits, crushed (not too finely); 190g white chocolate; 1 tablespoon vegetable oil; 1 teaspoon peppermint essence; 100g Christmas M&Ms; 4 candy canes, crushed

If you’re looking for a festive treat that’s easy to make and guaranteed to wow at your holiday gatherings, then this Christmas Peppermint Slice Recipe is an absolute must-try. I absolutely love how this slice turns out—rich, chocolatey, and with that refreshing peppermint kick that just screams Christmas. Stick with me, and I’ll share all my tips to help you nail this sweet slice every time!

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Why You’ll Love This Recipe

Super Simple to Make: The no-bake base means you can whip this up quickly even if you’re short on time.
Festive Flavour: Peppermint essence and crushed candy canes add that perfect holiday freshness.
Textural Delight: Crunchy biscuits, smooth chocolate, and colorful M&Ms make every bite fun.
Make Ahead Friendly: You can prepare it days in advance, perfect for busy holiday schedules.

A square piece of dessert is held by a woman's hand with bright red nail polish, showing two clear layers: a dark brown bottom layer with light-colored nut and cookie pieces mixed in, and a thick white top layer decorated with red and green candy pieces and crushed candy canes scattered all over. In the background, there is a white plate with more of the same dessert squares stacked on top of each other, all placed on a white marbled texture covered with a red cloth with white polka dots. photo taken with an iphone --ar 2:3 --v 7 - Christmas Peppermint Slice, festive peppermint chocolate slice, holiday no-bake dessert, easy Christmas treats, peppermint holiday sweets

Ingredients You’ll Need

This Christmas Peppermint Slice Recipe is a wonderful balance of rich chocolate, buttery biscuit crunch, and refreshing mint. The ingredients are easy to find, and I always keep a stash of the biscuits and peppermint essence handy during the holidays.

Flat lay of a small square of golden butter, a small white ceramic bowl of rich dark cocoa powder, a small white ceramic bowl overflowing with light brown sugar, a small white ceramic bowl of smooth vanilla extract, a small white ceramic bowl of creamy milk, a pile of roughly crushed light golden Marie biscuits, a block of glossy white chocolate, a small white ceramic bowl of clear vegetable oil, a small white ceramic bowl of pale peppermint essence, a scattering of colorful Christmas M&Ms, and crushed candy cane pieces scattered neatly, all arranged with perfect symmetry and balanced proportions on a clean white marble surface, soft natural light, photo taken with an iPhone, professional food photography style, fresh ingredients, white ceramic bowls, no bottles, no duplicates, no utensils, no packaging --ar 2:3 --v 7 --p m7354615311229779997 - Christmas Peppermint Slice, festive peppermint chocolate slice, holiday no-bake dessert, easy Christmas treats, peppermint holiday sweets

Butter: Use unsalted if possible to control saltiness — it melts smoothly and binds everything together.
Cocoa powder: I recommend natural cocoa for a classic chocolate flavor without added sweetness.
Brown sugar: Adds a lovely caramel note that complements the peppermint perfectly.
Vanilla extract: Just a teaspoon enhances the depth of flavor in the chocolate base.
Milk: Full-fat milk works best to keep the chocolate sauce smooth and creamy.
Marie or wine biscuits: Make sure to crush, but not pulverize them — you want nice texture in every bite.
White chocolate: Use good quality white chocolate for melting; it holds peppermint flavor beautifully.
Vegetable oil: Helps keep the white chocolate glossy and easy to spread.
Peppermint essence: A little goes a long way to get that festive mint hit.
Christmas M&Ms: Adds color and candy crunch; you can substitute with any festive candies you like.
Candy canes: Crush just enough to sprinkle without turning into dust — you want that crunch and look.

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Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Variations

I love how versatile this Christmas Peppermint Slice Recipe is—it’s easy to tweak depending on your taste or dietary needs. Feel free to experiment; that’s what makes it so much fun!

Nut-Free: I usually keep nuts out of this to keep it safe for everyone, but if you want some crunch, try adding chopped toasted pecans or walnuts on top.
Vegan Version: Swap butter for coconut oil, use dairy-free milk, and vegan white chocolate to make this slice vegan-friendly—I’ve done it and the peppermint flavor still shines through.
Extra Minty: When I want a stronger peppermint kick, I add crushed peppermint candies into the base mixture as well as the topping.
Chocolate Lovers: For an ultra indulgent twist, add a layer of melted dark chocolate under the white chocolate topping—trust me, it’s heaven.

How to Make Christmas Peppermint Slice Recipe

Step 1: Prepare Your Pan and Crush the Biscuits

Start by lining a 19 x 29cm slice tin with baking paper. This makes it so much easier to lift the slice out once it’s set. Take your Marie or wine biscuits and crush them – I like to use my hands or a rolling pin, aiming for chunky crumbs instead of powder. This texture is what gives the base that delightful crunch.

Step 2: Melt the Butter Mixture

Pop the butter, cocoa powder, and brown sugar into a medium saucepan over low heat. Stir gently until the sugar dissolves and everything melts together smoothly. Don’t rush this step; low and slow gives you a silky base. Once melted, remove from the heat and stir in the vanilla extract and milk. This helps cool the mixture slightly and keeps it smooth without curdling.

Step 3: Combine the Base

Pour the chocolate mixture over the crushed biscuits and stir well to combine. You want every bit of biscuit to be coated deliciously. Press this mixture firmly and evenly into your lined tin using the back of a metal spoon. Pat it down well so it holds together once set.

Step 4: Make the Peppermint White Chocolate Topping

Place white chocolate, vegetable oil, and peppermint essence into a microwave-safe bowl. Heat in 30-second bursts, stirring each time, until almost melted. I usually remove it just before fully melted, then stir off heat—residual warmth does the rest. Pour this over the biscuit base and gently spread to the edges for a smooth finish.

Step 5: Add Festive Toppings and Chill

Sprinkle crushed candy canes and Christmas M&Ms evenly over the white chocolate while it’s still soft. This is where the slice really gets its festive sparkle! Then pop it in the fridge for at least 4 hours to set fully. When it’s ready, take it out about 20 minutes before you want to slice—it helps avoid cracking and makes cutting cleaner.

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Pro Tips for Making Christmas Peppermint Slice Recipe

Don’t Overheat the Chocolate: I learned this the hard way—melting white chocolate too long makes it grainy. Always melt gently and stir off heat.
Chunky Biscuit Bits Are Better: Leaving the biscuit a little chunky rather than powdery gives your slice that satisfying bite.
Press Firmly for Cleaner Slicing: I use the back of a spoon or flat-bottomed glass to pack the base tight so it doesn’t fall apart.
Let It Warm Before Cutting: Taking the slice out 20 minutes early transformed my cutting game—no cracking, no crumbly edges.

How to Serve Christmas Peppermint Slice Recipe

The image shows a glass square dish filled with multiple square pieces of a two-layered dessert. The bottom layer is dark brown with a dense, fudgy texture, while the top layer is creamy white. The white layer is decorated with red and green candy-coated chocolates scattered on top along with small pieces of crushed peppermint candies that add red, white, and green colors. The dish sits on a white marbled surface. photo taken with an iphone --ar 2:3 --v 7 - Christmas Peppermint Slice, festive peppermint chocolate slice, holiday no-bake dessert, easy Christmas treats, peppermint holiday sweets

Garnishes

I love adding a light dusting of icing sugar on top for a snow-kissed look. Sometimes, I pop a few extra mini candy canes or fresh peppermint leaves around the plate for a pretty holiday presentation. It’s simple but really makes it pop on the table.

Side Dishes

This slice pairs wonderfully with a hot cup of coffee or peppermint tea. For Christmas brunch, I like serving it alongside fresh fruit salad or a tangy yogurt dip to balance the sweetness.

Creative Ways to Present

One year, I cut the slices into mini bite-sized squares and arranged them on a festive platter with red and green cupcake liners—such a hit with guests, especially kids! You can also stack slices between wax paper layers in a decorative tin as a lovely homemade gift idea.

Make Ahead and Storage

Storing Leftovers

I store leftover slices in an airtight container in the fridge. They keep beautifully for up to a week and actually taste better after a day as the flavors meld. Just make sure the container is sealed well so the slice doesn’t absorb fridge odors.

Freezing

Freezing works great if you need to prep in advance. I wrap the slice tightly in cling wrap and foil, then place it in a freezer bag. When ready to enjoy, thaw overnight in the fridge. The texture is still fantastic and the peppermint comes through nicely.

Reheating

No need to reheat—the slice tastes best cold or at room temperature. If you like, just leave it out for 20-30 minutes before serving to soften the chocolate layers slightly.

FAQs

Can I use other types of biscuits in this Christmas Peppermint Slice Recipe?

Absolutely! While Marie or wine biscuits are traditional here because of their mild flavor and crunch, you can experiment with digestive biscuits, graham crackers, or even gluten-free options depending on your taste and dietary needs.
How strong is the peppermint flavor in this slice?

The peppermint essence gives a lovely, refreshing mintiness without overpowering the chocolate. If you prefer a stronger kick, you can increase the peppermint essence slightly or add extra crushed candy canes to the topping.
Is this Christmas Peppermint Slice Recipe suitable for kids?

Yes! It’s a hit with kids thanks to the colorful M&Ms and sweet peppermint flavor. Just double-check the peppermint essence brand to make sure it’s food-grade and safe for children.
Can I make this slice ahead of time?

Definitely! It actually benefits from sitting in the fridge for several hours or even overnight to let all the flavors marry beautifully. Great for holiday meal prep.

Final Thoughts

This Christmas Peppermint Slice Recipe has become a holiday staple in my home because it’s delicious, festive, and so easy—you don’t need to be a pro baker to impress with it. Every year my family goes crazy for those crunchy bites and that cool peppermint twist. If you give it a go, I’m confident it’ll be a hit in your kitchen too. Trust me, it’s the kind of recipe that brings smiles with every single slice!