Mars Bar Slice

These notes are here to help make this recipe a success; they cover some but not all ingredients; for a complete ingredient list, check out the recipe card below.

Mars Bars: a popular chocolate bar with nougat and caramel enrobed in smooth chocolate. (See below for more information if you are reading in the US)
Butter: I used salted butter.
Rice Bubbles: Also known as Rice Krispies. You can use any puffed rice cereal.
Milk Chocolate: I like to use a bar of Cadbury chocolate for the topping. Cooking chocolate doesn't have the same creamy taste.
Vegetable Oil: Adding this to the melted chocolate helps to stop it from cracking when you cut the slice.

We've tested this recipe at least 3 times to ensure it works well for you, have a look at our tips for getting the best dish you can!

• The size of chocolate bars is shrinking! The best way to ensure you have enough Mars bars is to look at the weight of the packets and add up how many you'll need. It probably won't be exact, so go for more rather than less. I generally use fun-sized bars as it is easy to get roughly the correct right.
• Buy a fresh box of puffed rice cereal; an opened packet won't have the same crunch.
• Melt the butter and Mars bars pieces over low heat; this stops them from catching on the bottom of the pan. Stir it frequently. It can sometimes look like it has separated, don't worry; remove it from the heat and stir it into the rice bubbles.
• Line the slice tray with baking/parchment paper with some overhang to make it easy to pull out the slice. 
• This recipe uses a 28x 18cm/7" x 11" rectangle pan. 
• When you put the mixture into the slice tin, push it down firmly to ensure that when you cut the slice, it doesn't crumble. I use a second tin to push it down. 
• Leave the slice in the refrigerator for at least 3 hours. This ensures it is fully set and won't fall apart when cut. 
• To cut nice neat slices: Remove the slice from the refrigerator for 5 minutes before cutting. Dip a sharp non-serrated knife into boiling water, dry it carefully, and cut your slice. 

These are all just suggestions and things that have worked in our test kitchen, but it is your dinner, so adapt it to suit your family. That is the beauty of cooking; we can all create our own delicious treats.

• Swap out the chocolate top: Instead of milk chocolate, you can use dark chocolate, white chocolate, or one of our favorite twists is to use a caramilk bar.
• Extras: Add extra treats to the rice bubble mixture or the chocolate top. Mini marshmallows, crushed Maltesers, mini M&Ms, peanut butter chips, caramel chips, or crushed nuts are all great add-ins.
• Change the cereal: Go extra chocolatey and use coco pops instead of rice bubbles. Or use cornflakes for something different.