Desserts & Sweet Treats/ Recipes

Mars Bars Squares

Mars Bars Squares, the classic squares using Mars Bars and Rice Krispies! Peanut free! From @kitchenmagpie

Sometimes simple can be simply the best. Returning to amazing tasting but completely bad for you treats can sometimes be so soul satisfying.

Sometimes it’s nice to forget the fancies and go back to the basics. Mars Bar Squares are the basics.

Basic tasty.


Basic melt in your mouth chocolate.

Basic takes a few minutes to make!

Basic get out of bed at 1 am because you remembered they are in the kitchen. These and a glass of milk at 1 am in your kitchen makes up for any kind of day you had.

Or more like sneaking into your sisters kitchen to eat them, since I made these in her place while visiting.

What could be a greater start to a recipe than melting chocolate bars with butter? I can’t think of anything to be honest. When that’s done, mix the Rice Krispies in with them, then transfer to a well greased 9×9 pan. Melt the chocolate and butter for the topping, then pour it on top. Cool in the fridge then cut into pieces and serve.

Mars Bars Squares are THAT easy, you guys! It’s no wonder my Mom made these all the time when I was growing up – and she still does! Except she leaves the chocolate off the top and I keep telling her that it’s a crime against all things delicious to do that. They are good without the chocolate, but they are AMAZING with the chocolate topping.

Happy non-baking up these Mars Bars Squares!




5 from 1 vote
Mars Bars Squares
Prep Time
10 mins
Cook Time
4 hrs 37 mins
Mars Bars Squares, one of my childhood favourites!
Servings: 16
Author: Karlynn Johnston
  • 4 Mars Bars
  • 1/2 cup butter or margarine
  • 3 cups Rice Krispies
  • Topping:
  • 1 cup chocolate chips
  • 1/4 cup butter or margarine
  1. Melt the Mars bars in a pot, then mix the Rice Krispies in with them, coating the cereal completely.
  2. Transfer to a well greased 9×9 or 8x8 pan.
  3. Melt the chocolate and butter for the topping, stirring until smooth, then pour it on top.
  4. Cool in the fridge then cut into pieces and serve.



  • Reply
    Super Bowl 2018 Recipe Round-Up - The Kitchen Magpie
    January 29, 2018 at 7:27 am

    […] Mars Bars Squares […]

  • Reply
    December 8, 2017 at 8:02 pm

    These look wonderful. i would like to make these for a bake sale. How ling do you think they would keep?

  • Reply
    November 23, 2017 at 10:45 pm

    Should the chocolate chips be milk chocolate or semi-sweet? Thanks!

  • Reply
    November 7, 2017 at 2:46 pm

    It might be helpful to change the directions to “melt the mars bars AND butter”. Yeah…

    I just did what the directions said, melted the mars bars and added the Rice Krispies. So now there’s no butter in that mixture.

    • Reply
      November 7, 2017 at 2:48 pm

      Hopefully they don’t end up terrible without the butter in them because I can’t make them again.

    • Reply
      November 7, 2017 at 5:00 pm

      They do not turn out ok without the butter in the mars bar mixture. Waste of all these ingredients. Sigh.

  • Reply
    September 23, 2017 at 9:36 am

    U forgot to add using the initial amount of butter in with the melting mars bars…

  • Reply
    Rosaline Linhart
    February 10, 2017 at 6:36 pm

    you can bring down the cost of making these by buying the Mars Bars at the Dollar store….

    • Reply
      The Kitchen Magpie
      February 11, 2017 at 5:09 am

      Yes!!! Great tip!

  • Reply
    Heather Averill
    February 10, 2017 at 12:35 am

    Mmm… I love these. Made them at Christmas. 🙂

  • Reply
    Mary Ann Hyndman Smith
    May 11, 2015 at 10:03 pm

    I think a Milky Way would work.

  • Reply
    The Kitchen Magpie
    May 11, 2015 at 12:10 pm

    Laura Van Scoyk-Myers Milky Way would be the closest bar to it..

  • Reply
    Krista Girvan
    May 11, 2015 at 1:48 am

    These are the best! My mother in law introduced me to them. I only make them at the holidays though or I’d eat them all the time! Lol

  • Reply
    Tiffany Kautz
    May 10, 2015 at 11:43 pm

    My absolute favourite square- my grandma used to make this for us as kids, and I now make this for my own family…..and end up eating A LOT of it \U0001f601

  • Reply
    Laura Van Scoyk-Myers
    May 10, 2015 at 10:02 pm

    I’m guessing it’s close to our Milky Way? Or is it more like snickers? I’m pretty sure I’ve had a Mars bar before but they were discontinued here awhile ago.

  • Reply
    January 6, 2015 at 2:45 am

    Can these be made without the chocolate topping?

    • Reply
      July 12, 2015 at 10:17 pm

      Yes. I prefer them that way. My grandkids say it’s to sweet with the frosting.

  • Reply
    December 17, 2014 at 4:08 pm

    Can you freeze those mars bars squares thanks.

    • Reply
      December 18, 2014 at 2:54 am

      RosemaryBarryTargett Absolutely!

  • Reply
    Rebecca Cooper
    November 12, 2013 at 6:42 pm

    they had knockoff mars bars at the $store 🙂 2 bars for $.50. Guess what I just made!

  • Reply
    June 6, 2013 at 1:38 am

    Thank you for sharing this very delicious and oh so addicting recipe!

  • Reply
    Deb Hove Johnson
    March 21, 2012 at 12:18 pm

    I have a similar recipe that calls for 8 milky way bars, 2 sticks of butter and rice krispies (same as in rice krispie treats recipe) in a 9×13 pan. Then a pkg of chocolate chips and stick of butter melted for topping. SO YUMMY but we call them triple angioplasty bars.

  • Reply
    Michelle Kehoe
    March 21, 2012 at 12:26 am

    the best square I ever put inside of my bewwy………. I <3 these!

  • Reply
    Maria Isabel Macias
    March 9, 2012 at 11:11 pm

    lo probe en irlanda y esta de miedo ahora voy a intentar hacerlo yo ya os contare

  • Reply
    Lindsey B.
    January 15, 2012 at 11:09 pm

    Thank you for this recipe! Someone at our old church used to make these all of the time for tea time and I’d lost the recipe.

    I think Milky Way bars are probably also a good substitute for Mars bars, if you can find them!

  • Reply
    January 1, 2012 at 7:48 pm

    I was wondering if I could substitute Crisco for butter (as I am out of butter)?

    • Reply
      January 1, 2012 at 7:52 pm

      Ohh, I am going to say no. Crisco just isn’t the same as butter, especially in this recipe!

  • Reply
    Marilyn the nurse
    September 18, 2011 at 10:58 pm

    Saw this recipe on the Stir by CafeMom but can not find Mars bars in our area. I can’t remember if they taste like Snickers? Could you suggest a substitute bar? Thank you!!!

    • Reply
      September 19, 2011 at 2:17 am

      Mars bars don’t have nuts in them…hmm. You know what? Three Musketeer bars are close, but no caramel in them. Snickers would work if you want peanuts in the squares…

    • Reply
      May 10, 2012 at 11:44 pm

      You could always try milkyway bars.

  • Reply
    October 8, 2010 at 3:48 pm

    My wife’s pregnant, so I can and will not show her this post.

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