This 4 Ingredient Mars Bar Slice is straight out of Annie's recipe tin. It's quick, easy and disappears fast! The only changes I've made to my Nanna's original No Bake Mars Bar Slice recipe are adding a luscious layer of milk chocolate and increasing the number of Mars Bars I use...because they've definitely shrunk over the years!
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My family love this recipe as much as 12-year-old me did. Nanna used to make this easy Mars Bar Slice for our family and it would be gone within minutes. She'd joke that she couldn't make it fast enough. Well, now I understand! My boys absolutely love this classic Rice Bubbles slice, and it disappears before my eyes every single time.
If you love easy no-bake treats, you'll also enjoy my Jelly Slice, Lemon Slice and Peppermint Slice.
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Why You'll Love This Recipe
- Only 4 Ingredients: You probably already have everything you need.
- Perfectly Chewy: Gooey Mars Bars and crispy Rice Bubbles make the perfect combination.
- Ready in Minutes: Just melt, stir and chill.
- Always a Crowd Favourite: Perfect for parties, lunchboxes and afternoon tea because it disappears fast!
Recipe Ingredients
You only need 4 basic ingredients to make this easy Mars Bar Slice recipe.
- Mars Bars
- Rice Bubbles
- Butter
- Milk Chocolate
See recipe card for full list of ingredients and quantities.
How to make Mars Bar Slice
- Step 1: Roughly chop the Mars Bars and add to a large saucepan, along with the butter. Stir until melted.
- Step 2: Swap to a balloon whisk and whisk until mixture is combined and smooth.
- Step 3: Add rice bubbles to the saucepan and stir to combine. Press mixture into a lined tin.
- Step 4: Melt milk chocolate in the microwave, then pour it over the slice, tilting the pan to get an even layer. Refrigerate until set.
Hint: Using a large saucepan may seem like overkill, but you'll be grateful once you add the rice bubbles. It can get messy otherwise!
My family loves this slice!
I now make it for every family gathering"
Substitutions & Variations
- Milk chocolate: I love using Callebaut chocolate, but any good quality chocolate works. Try dark chocolate for a less-sweet topping.
- Mars Bars: Fun-size Mars Bars can be used instead. Just use the same total weight.
- Christmas version: Sprinkle Christmas M&Ms or festive sprinkles over the melted chocolate before it sets.
Equipment
- Spatula
- Balloon Whisk
- 20cm Square Tin
Storage
Apparently it should last a week in the fridge, but I've never been able to test it! You could also freeze it for a few months.
Top Tip
How to cut Mars Bar Slice: Don't wait until the slice is rock hard before cutting it. I pop mine into the fridge for about an hour, then slice it while the chocolate has just set. You'll get much cleaner squares and far less cracking. Once it's cut, pop it back into the fridge until completely firm.
If your slice is too hard, the Mars Bars were probably cooked over heat that was too high. Melt the Mars Bars and butter gently over low heat until they're just smooth.
Absolutely! Once cut into squares, store the slice in an airtight container with baking paper between the layers. It'll keep well in the freezer for up to 3 months.
Chocolate is much easier to cut when it's only just set. If your slice is fully chilled, warm a sharp knife in hot water, wipe it dry and cut with gentle pressure for neat squares.
More No Bake slices
No Bake Mars Bar Slice
Equipment
Ingredients
- 329 g Mars Bars (7 x 47g bars) chopped
- 150 g Butter cubed
- 140 g Rice Bubbles
- 180 g Milk Chocolate
Instructions
- Grease and line a 20cm x 20cm pan with baking paper
- In a large size saucepan, melt the Mars bars and butter over low heat, stirring continually with a silicone spatula.
- Use a balloon whisk to smooth and incorporate the mixture and make it smooth.
- Add the Rice Bubbles to the saucepan and gently fold through, so that they are all coated.
- Place mixture into prepared pan and smooth over.
- Melt the milk chocolate by breaking into small pieces and placing in a microwave safe bowl.
- Heat on high for 1 minute, then stir well
- Continue to heat in microwave for 10 seconds at a time, stirring well in between. It should only take 2-3 bursts.
- Pour melted chocolate over slice and spread by titlting the pan, or with an offset spatula
- Refrigerate until set (approx 1 hour), then cut into squares
Notes
Nutrition
Save this recipe 💌
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Belinda says
This was so easy to make!
Christine says
My family loved this!