Our famous Thermomix Mars Bar Slice recipe is made with just FIVE ingredients and takes less than 10 minutes to prepare!
This slice is the perfect snack for your next party or special occasion and will be a hit with your family and friend.
It really takes no time at all to make this Mars Bar Slice, the hardest part of the recipe is waiting for the slice to set in the fridge!
Why you will love this recipe
- Little prep time - It will take you less than 10 minutes to prepare this recipe.
- Make ahead - Our Mars Bar Slice can be stored in the fridge for up to one week.
- Few ingredients - You will only need FIVE ingredients to put this recipe together.
- Party favourite - Everyone will LOVE this sweet slice, making it perfect for your next party or special occasion.
Ingredients
Please note you will find the full list of ingredients with their quantities plus the method in the recipe card below.
- Mars Bars - you will need 4 x 47gram Mars Bars for this recipe. You can use the same quantity of fun size Mars Bars.
- Butter - we use unsalted butter.
- Rice Bubbles - any brand of rice cereal can be used.
- Golden Syrup - although honey can be used, we recommend using Golden Syrup.
- Milk Chocolate - either a block of chocolate or chocolate melts can be used.
Method
Step 1. Melt the butter, golden syrup and 3 of the Mars Bars in your Thermomix bowl.
Step 2. Add the remaining chopped Mars Bar and the rice bubbles and mix to combine.
Step 3. Transfer the slice to a lined slice tray and gently smooth the surface.
Step 4. Pour melted chocolate onto the slice and place into the fridge to set.
Step 5. Remove the slice from the fridge once set. Allow it to sit at room temperature for 20 minutes.
Step 6. Slice into pieces and store in the fridge until needed.
Recipe Hints and Tips
- The same quantity of fun sized Mars Bars can also be used.
- Any type of puffed rice cereal can be used for this recipe.
- Either chocolate melts or a block of chocolate can be used.
- You can use different sized/shaped baking dishes for this recipe, please note this will change the depth of the slice and also the time it takes to set.
- We like to remove the Mars Bar Slice from the fridge about 20 minutes before slicing, as this makes it less likely for the chocolate layer to crack when cutting into small pieces.
- We also recommend using a small and slightly serrated knife to get those perfect little slices.
- To store, place in an airtight container and store in the fridge for up to one week.
- This slice is NOT freezer friendly.
To assist cutting into small pieces without cracking, let the Mars Bar Slice sit at room temperature for 20 minutes before cutting. We also recommend doing this before consuming.
Keep this Mars Bar Slice in the fridge for up to one week.
You may also enjoy:
- Thermomix Snickers Slice
- Thermomix Honey Almond Slice
- Thermomix Rice Bubble Bars
- Licorice Allsort Slice
- Jelly Slice Recipe by Thermobliss
- Thermomix Coconut Ice
- Easy Peppermint Slice
Mars Bar Slice
Equipment
- 1 x 18x28cm Slice Tray
Ingredients
- 90 grams rice bubbles
- 4 Mars Bars 47 gram bars
- 75 grams butter
- 1 teaspoon golden syrup
- 200 grams milk chocolate
Instructions
- Grease and line an 18 x 28cm slice tray with baking paper.
- Roughly chop 3 of the Mars Bars and place in Thermomix bowl along with the butter and golden syrup/
- Cook for 3 minutes, 60 degrees, speed 2. Scrape down the sides of the bowl.
- Chop the remaining Mars Bar in to small pieces and add it along with the rice bubbles to the Thermomix bowl. Mix for 15 seconds, speed 2, REVERSE or until completely combined.
- Transfer the mixture to the prepared slice tin and gently press down to smooth the surface.
- Add the chocolate to a clean Thermomix bowl. Cook for 3 minutes, 50 degrees, speed 2 or until melted.
- Pour the melted chocolate over the slice and place into the fridge for 2 hours or until set.
- Once set, allow the slice to sit at room temperature for 20 minutes before cutting into pieces.
Notes
- The same quantity of fun sized Mars Bars can also be used.
- Any type of puffed rice cereal can be used for this recipe.
- Either chocolate melts or a block of chocolate can be used.
- Different sized/shaped baking dishes can be used for this recipe, please note this will change the depth of the slice and also the time it takes to set.
- We like to remove the Mars Bar Slice from the fridge about 20 minutes before slicing, as this makes it less likely for the chocolate layer to crack when cutting into small pieces.
- We also recommend using a small and slightly serrated knife to get those perfect little slices.
- To store, place in an airtight container and store in the fridge for up to one week.
- This slice is NOT freezer friendly.
Nutrition
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Immy says
I have a Kogan thermo mixer, when it says reverse mix I don’t understand as I’m not sure my thermomix has a means to reverse direct the mixer, but would it still work ok with normal mixing? Like same way?
Kiki says
May I ask why you add the third mars bar last? Does it melt or stay chunky?
Mel says
A regular in our home for school lunchboxes. Always get compliments. Always use the Freedom Foods rice puffs and it's sooooo yum!
joy schonhfisch says
can this work on the stove
Lucy says
Absolutely!! Here's my conventional version: https://bakeplaysmile.com/mars-bar-slice-is-very-very-nice/
Jessica Smith says
How long would you say this’ll last in the fridge?
I love mars bar slice so planning on making it to take for a weekend away 🙂
Thank you.
Lucy says
Hi Jessica, Mars Bar Slice can be stored in an airtight container in the fridge for up to 1 week. It can also be frozen for up to 1 month.
Rebecca says
Does this freeze okay?
Lucy says
Yes it does (in an airtight container for up to 1 month) xx
Ann says
I've never made Mars Bar slice before, and this was easy and delicious! Th ask for a great, novice friendly recipe!
EssentiallyJess says
This was not a good thing to read when trying to avoid chocolate. Yum!