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Mars Bar Cake The Best Chocolate Crispy Cake Recipe Ever

Updated on October 23, 2017

Best Chocolate Crispy Cake Recipe in the Whole Wide World!

Easy rice crispy, mars bar cake recipe. Great for putting out after dinners and little treats for your Party, can be made days in advance too! This is the BEST mars bar cake, filled with little bits of marshmallow, for a great tasting gooey crispy cake.

We also make these as little extras for Gifts, this year we made little bags as presents. Problem is every celebration means we need to make them!

My husband has a very sweet tooth, he loves the Mars Bar Chocolate crispy cake, (like the rocky robin) but could never find one that tasted like it used to. So he read the ingredients on the packet and decided to make his own.

The ones for sale had cherries, and crushed biscuits that seemed to go stale as you were eating it. He decided to make his own recipe for Gooey, Chocolate Crispy, Marshmallow, Mars Bar Cake, and it has so many caloires shhh....

Ingredients for Your Shopping List


What you will need

And a little bit of strength

Now my husband is 6ft 10" and an ex ice hockey player so you can imagine his build. Seeing him in the kitchen at the cooker is a rareity in itself. But he was determined to make his favourite crispie cake. I was desperate not to make a fuss and encourage this new found inspiration to explore this foreign part of the house for him. Our daughter helped out too, eating the Marshmallows!


  • bowl
  • microwave/or pot of hot water (to melt the chocolate)
  • large wooden sppon
  • Heavy based medium sized pot - he likes to use our soup pot as it is good to grip onto when mixing.

Ingredients to make a medium sized baking tray of finished cake

1 Pkt Cooking chocolate - dark or milk

1/6th of a medium sized pkt Butter or margerine

Rice crispies - cereal

Mini marshmallows - you can cut up larger marshmallows if you can't find mini ones

Golden Syrup

4 or 5 Mars Bars

Rocky robin chocloate crispie cake
Rocky robin chocloate crispie cake

How to make your Crispie Cake

Melt the butter and Syrup together in the pot and mix well until all melted. Add in the chopped up Mars Bar chunks, and stir until melted, this should not be done over a hot heat, you just want to melt it all.

Once all melted.

Slowly add in the rice crispies, until the mixture is all used up - the mixture gets very tough to stir at this point and you need a lot of strength.

As you are doing this add in the mini marshmallows, bit by bit stirring until all mixed up. Yes its gooey.... real Gooey.

You are going to transfer the mixture onto your greased baking tray, and pat down.

My husband can be seen beating the poor mixture into place with the fish slice! (he also dips it in hot water to make it easier to work with the mixture.

Pu this in the refrigerator for 1/2 hour until it cools and sets.

Melt the chocolate in the bowl over the pan of hot water.

Once it is ready pour it over the mixture spreading evenly.

Place back in the fridge to set.

Once set it is ready to be sliced up and eaten.

chocolate mars bar cake
chocolate mars bar cake

Easy tray bake cakes to make for the School Fete

and the most popular

This is an absolute must if you have to make a tray bake for the school fete, we made two tins last year, and instead of going out with the coffees they were sold, we were amazed at how quickly they disappeared.

And have our orders in for next year, this is so easy to make, and believe me it does not last long in a house that loves chocolaty snacks.

Word spreads fast, and you know it is a winner when you are asked in the local shop, if you would make it for the Brownies Jumble sale, My husband loves it, and finds it funny how the ladies all enjoy his cake.

We also have made these gorgeous gifts for the family for special occasions.

Seven Days Without chocolate makes one Weak

— Unknown

© 2010 Lisa Auch

Did you like our version of the Mars bar Cake? - Do you prefer to make your own sweets and treats

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    • profile image

      momsfunny 4 years ago

      Great recipe. I should try this sometime.

    • prosepine lm profile image

      prosepine lm 5 years ago

      Super indulgent snack! Thanks for the recipe!

    • profile image

      MintySea 6 years ago

      Looks yummy

      I made rice crispy treats for Halloween for my kids they want me to make more :-) PS they had a little Chocolate but not as much as yours

    • profile image

      anonymous 6 years ago

      Thank you so much for your beautiful tribute one of my favorite sweets.. "Chocolate Crispy Cake" You make me feel hungry again :P Have a wonderful time.. always.. dearest Lisa :)

    • profile image

      mukeshdaji 6 years ago

      I used to have the neimann marcus recipe for the chocolate chip oatmeal cookies years ago, I wish I could dig that up, they were sensational! The recipe above sounds like a winner, can't wait to try it out. So if anyone out there has an awesome chocolate chip cookie from scratch recipe, please pass it on.

    • TapIn2U profile image

      TapIn2U 6 years ago

      Yummy is all I can say! I love everything chocolate and this is definitely one of them. While I usually buy my crispy cake, I would love to try your recipe here. Fantastic lens! Hey, I just published my fourth lens called the 3 Shortcuts to Happiness and would love to know what you think of it. Any suggestion will be greatly appreciated. Blessings! Sundae ;-)

    • CCGAL profile image

      CCGAL 6 years ago

      I don't eat many sweets these days, but this does sound yummy. It reminds me of the recipe we made back in the 60's, home made O'Henry Bars. Gosh I could eat a lot of those when I was young. Now, not so much.

    • funmomofmany profile image

      funmomofmany 6 years ago

      oh YUM! Anything chocolate is worth trying. This looks yum, yum, yummy! Thank you for sharing!

    • tiff0315 profile image

      tiff0315 6 years ago

      It's much more fun to make your own sweets! This one looks delicious!!

    • WildFacesGallery profile image

      Mona 6 years ago from Iowa

      This looks soooo good. Happy April Fools Day blessing from the fine arts angel. :)

    • norma-holt profile image

      norma-holt 6 years ago

      Lovely recipe and a special blessing. Featured on April Fools Day Blessings, Hugs

    • profile image

      anonymous 6 years ago

      Looks Yummy! Happy April Fools Day! A Special Angel Blessing from this Fool today.

    • profile image

      anonymous 6 years ago

      How inventively delicious! It sure would be nice to have a couple right now! Icy streets in Fargo, can't run to the store for ingredients, so I'll just look at the picture again....

    • nightbear lm profile image

      nightbear lm 7 years ago

      I think it is fabulous that your husband was so adventurous. If you want what you want, sometimes you have to make it. Great job

    • profile image

      anonymous 7 years ago

      Looks like something for the weekend. I just can't seem to get away from bad stuff that tastes so good!!

    • jptanabe profile image

      Jennifer P Tanabe 7 years ago from Red Hook, NY

      Oh goodness, I'm not much for making such sweet things. But, I have to admit, these chocolate crispie cakes look like something I could manage - with my husband's help of course!