Mars Bar Slice

This slice takes all the best parts of a Mars Bar and puts them into chocolatey, chewy squares of goodness! With only five ingredients and less than 20 minutes of preparation, you can whip up a batch in no time.

Ingredients in Mars Bar Slice

To make Mars Bar Slice, you'll need just five ingredients.

• Mars Bars: you'll need approximately 188 g (6.6 oz) total. You can use:
  • 4 x 47 g bars (that's what I use!) OR
  • A 12-pack of fun size Mars Bars OR
  • 3 x 64 g twin pack Mars Bars
• Unsalted butter
• Rice Bubbles: also known as Rice Krispies in the USA and Canada. You may find off-brand versions like 'Rice Pops' which are okay too. DO NOT use 'Puffed Rice' as this is a different product altogether.
• Milk chocolate melts: any chopped milk baking chocolate is fine. You can also use chocolate chips (if designed to be melted). Swap out with dark chocolate (less sweet) or white chocolate (more sweet).
• Canola oil: This is OPTIONAL. It makes the chocolate easier to spread and the slice easier to cut. You can use any flavourless vegetable oil (safflower, sunflower etc.), coconut oil or copha.

How to Make Mars Bar Slice

Making Mars Bar Slice is easy! You'll need a chopping board, saucepan, spatula, whisk, baking pan and a medium heatproof bowl.

1. Chop up your Mars Bars into smaller chunks. I chop my 47 g bars into four pieces each.
2. Melt the Mars Bars together with the butter in a medium saucepan over low heat. Remember, the saucepan needs to be big enough to fit the Rice Bubbles too!
3. Stir continuously for 3-4 minutes. If it's still lumpy, use a whisk to get it nice and smooth.
4. Remove from heat and add the Rice Bubbles.

5. The most important step! Stir your rice bubbles through the Mars Bar mixture very VERY well. Take care not to crush the Rice Bubbles - it's more of a folding action. You want all of the bubbles to be evenly coated with mixture. This will make sure they all hold together in the pan.
6. Spoon your mixture into the tin and press down firmly. I use a flat spatula to get it nice and even and to get the mixture into the corners.
7. Pour over your melted chocolate. Yum!
8. Spread the chocolate evenly over the Rice Bubble mixture. You can tap the pan firmly on the kitchen bench a few times to settle the chocolate into one smooth layer. Refrigerate and slice up to serve!

Tips & FAQs for Mars Bar Slice

Why is my slice crumbling and falling apart when I slice it?
This means you haven't mixed the Rice Bubbles in well enough with the melted Mars Bars and butter. Make sure all the Rice Bubbles are completely coated in the mixture before spooning it into the tin.

Why did my chocolate topping go crumbly?
Chocolate goes crumbly when it is either overcooked or exposed to water. Make sure you use a clean and dry heat-proof bowl to microwave the chocolate in. Only heat for maximum 1 minute to start with, then reduce to 30 seconds, then 10 seconds. Stir very well in-between microwaving.

Can I use different chocolate bars?
I haven't tried substituting Mars Bars with anything else and I don't recommend you substitute the Mars Bars. Leave me a comment if you do and it works!

Storage

You can keep the slice un-refrigerated in an airtight container for up to 7 days.

Fun variations on Mars Bar Slice

• Top with more chopped Mars Bars for an even bigger chocolate hit.
• Marble the chocolate topping with melted white chocolate. Spoon over blobs of melted white chocolate onto the milk chocolate and drag through a skewer to get a fun marbled pattern.
• Use dark or white chocolate for a different flavour in the topping.

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