Imagine biting into a rich, fudgy chocolate slice that tastes just like a warm mug of hot cocoa—only in dessert form. This Hot Chocolate Slice is everything you love about the classic winter drink but in a chewy, chocolatey bar topped with a fluffy marshmallow layer. It’s cozy, indulgent, and ridiculously easy to make!
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Whether you’re craving a sweet treat for a holiday gathering, a weekend baking project, or just an everyday chocolate fix, this slice is here to satisfy. The best part? No need to wait for winter—this dessert is perfect all year round.
Why You’ll Love Hot Chocolate Slice
Rich & Fudgy: Think of the perfect brownie, but even more decadent.
Easy to Make: Simple steps, no fancy equipment needed.
Tastes Like Hot Cocoa: With real hot chocolate mix in the batter, this slice delivers that nostalgic flavor in every bite.
Marshmallow Bliss: A soft, fluffy marshmallow topping adds the perfect touch of sweetness.
Crowd-Pleaser: Whether for parties, holidays, or cozy nights in, this is a guaranteed hit.
Ingredients in Hot Chocolate Slice
These simple ingredients come together to create a dessert that’s both rich and comforting:
Butter: Adds richness and keeps the slice soft and chewy.
Brown Sugar: Gives the slice a deep caramel-like sweetness.
Hot Chocolate Mix: The key ingredient that brings out the classic hot cocoa flavor.
Cocoa Powder: Enhances the chocolate intensity.
Eggs: Help bind everything together for a perfect texture.
Flour: The base of the slice, creating a dense and fudgy bite.
Baking Powder: Adds a little lift to keep the slice from being too heavy.
Vanilla Extract: Balances the chocolate flavor with warmth.
Mini Marshmallows or Marshmallow Fluff: The ultimate hot cocoa topping, melted for a gooey finish.
Chocolate Chips (Optional): For extra melty goodness in every bite.
(Note: The full ingredient list with measurements is provided in the recipe card below.)
Instructions
Preheat the Oven: Set your oven to 350°F (175°C) and line a baking pan with parchment paper.
Melt the Butter & Sugar: In a saucepan, melt the butter and brown sugar together until smooth. Remove from heat and whisk in the hot chocolate mix and cocoa powder.
Mix the Batter: Add eggs and vanilla, stirring until well combined. Gradually fold in the flour and baking powder until a thick batter forms.
Bake the Slice: Pour the batter into the prepared pan and smooth it out evenly. Bake for 20–25 minutes, until set but still slightly soft in the center.
Add the Marshmallow Topping: Immediately sprinkle mini marshmallows over the warm slice. Return to the oven for 2–3 minutes, just until the marshmallows puff up and start to melt.
Cool & Set: Let the slice cool completely before cutting. For cleaner cuts, chill in the fridge for 30 minutes first.
Serve & Enjoy: Slice into squares and enjoy with a mug of hot cocoa or a drizzle of chocolate sauce!
How to Serve Hot Chocolate Slice
This dessert is perfect as is, but here are some fun ways to elevate it:
- Drizzle with Chocolate Sauce for extra indulgence.
- Dust with Powdered Sugar for a snowy, festive touch.
- Serve Warm with Ice Cream for the ultimate dessert experience.
- Pair with Coffee or Hot Chocolate for a cozy treat.
Additional Tips
- Use High-Quality Cocoa: The better the cocoa powder, the richer the chocolate flavor.
- Let It Cool Completely: This helps the slice set properly before cutting.
- For an Extra Gooey Topping: Swirl in some marshmallow fluff instead of mini marshmallows.
- Store Leftovers: Keep in an airtight container for up to 3 days at room temperature or a week in the fridge.
FAQ
Q1: Can I use regular chocolate instead of hot chocolate mix?
A1: Yes! Substitute with melted chocolate for an extra rich texture.
Q2: Can I make this ahead of time?
A2: Absolutely! This slice tastes even better the next day.
Q3: How do I store leftovers?
A3: Store in an airtight container at room temp for 3 days or in the fridge for up to a week.
Q4: Can I freeze Hot Chocolate Slice?
A4: Yes! Freeze in an airtight container for up to 2 months. Thaw at room temp before serving.
Q5: Can I use marshmallow fluff instead of mini marshmallows?
A5: Yes! Spread a layer on top after baking instead of melting marshmallows.
Q6: What’s the best way to reheat this slice?
A6: Pop it in the microwave for 10–15 seconds to soften the marshmallow layer.
Q7: Can I add nuts or other mix-ins?
A7: Definitely! Chopped hazelnuts, pecans, or white chocolate chips work great.
Q8: How do I prevent the marshmallow topping from getting too sticky?
A8: Let the slice cool completely before slicing, and use a greased knife for clean cuts.
Q9: Can I make this gluten-free?
A9: Yes! Use a gluten-free flour blend for an easy swap.
Q10: How do I make it extra chocolatey?
A10: Stir in extra chocolate chips or drizzle melted chocolate on top.
Final Thoughts
This Hot Chocolate Slice is everything you love about a cozy cup of cocoa, turned into a decadent dessert. Rich, chewy, and topped with melty marshmallows, it’s perfect for any time you need a chocolate fix. Whether you’re serving it for a holiday treat or just indulging in a little self-care baking, this slice is sure to be a favorite. Enjoy!
Print
Hot Chocolate Slice
- Yield: 12 servings 1x
- Category: Dessert
- Method: No-Bake
- Cuisine: American
Description
This Hot Chocolate Slice is the ultimate layered dessert! A cinnamon biscuit base is topped with a rich dark hot chocolate mousse and finished with a fluffy vanilla marshmallow layer. Perfect for chocolate lovers, this no-fuss treat is a must-try!
Ingredients
Cinnamon Biscuit Base
- 1 cup self-raising flour
- 3/4 cup desiccated coconut
- 1/2 cup brown sugar
- 2 tsp ground cinnamon
- 150g melted butter
Dark Hot Chocolate Mousse
- 80g butter
- 1/4 cup cocoa powder
- 300g dark chocolate, broken into small pieces
- 3 eggs, separated
- 1/4 cup caster sugar
- 1 1/2 cups cream
Vanilla Marshmallow
- 1 cup caster sugar
- 1 cup water
- 1 tbsp gelatine powder
- 2 tsp vanilla extract
Instructions
Cinnamon Biscuit Base
- Preheat oven to 180°C (350°F).
- Grease a 16 x 25cm slice pan and line the base with parchment paper.
- In a bowl, mix flour, coconut, brown sugar, and cinnamon.
- Add melted butter and stir until combined.
- Press mixture evenly into the prepared pan.
- Bake for 12 minutes until golden. Let cool.
Dark Hot Chocolate Mousse
- Melt butter, cocoa, and chocolate in a small saucepan over low heat, stirring until smooth.
- Remove from heat and quickly mix in egg yolks. (The mixture may look lumpy but will smooth out when cream is added.)
- In a separate bowl, whisk egg whites, gradually adding sugar until stiff peaks form.
- Gently fold a spoonful of the chocolate mixture into the egg whites, then fold in the rest.
- Fold in whipped cream until fully combined.
- Pour mousse over the cooled biscuit base, smoothing the top.
- Refrigerate for 4 hours until set.
Vanilla Marshmallow
- In a small saucepan, combine sugar, water, and gelatine over low heat, stirring until dissolved.
- Increase heat to medium and simmer for 6 minutes, stirring occasionally. Let cool for 5-10 minutes.
- Pour mixture into a stand mixer and beat on high for 9 minutes until thick, white, and fluffy.
- Mix in vanilla extract.
- Spread marshmallow over the set mousse layer, smoothing the top.
- Refrigerate for 4 more hours until firm.
To Serve
- Heat a knife in hot water, wipe dry, and slice.
- Store in an airtight container in the fridge for up to 3 days.
Nutrition
- Serving Size: 1 slice
- Calories: 410
- Sugar: 32 g
- Sodium: 80mg
- Fat: 26g
- Saturated Fat: 16g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 42g
- Fiber: 2g
- Protein: 5g
- Cholesterol: 75mg