Lazy Cookie Bars

Lazy Cookie Bars are chewy, sweet and SIMPLE!

Sometimes you just need a simple, candy loaded sweet treat. And since today happens to be the day after the top candy holiday of the year I’d say timing is perfect!

I actually had a sick little guy on Halloween this year which for him was really a life-disaster. No costume, no candy, no running around in the dark with flashlights with his friends…

And I have to say, while I enjoyed the extra snuggle time, one less kid trick or treating meant one less bag of candy to raid. With less reserves those peanut butter cups are carefully tracked.

BUT if you are in a house with an overflowing candy dish I have the recipe for you…

And we’re calling them lazy bars because they couldn’t take less effort.

lazy bars image

Yes, I used M&M’s, but you can absolutely use any candy you would like. All you need are 2 cups of [chopped] candies. Obviously don’t chop the M&M’s, though. Only chop if you’re dealing with larger pieces.

In other words, use your brains.

lazy bars picture

No mixer required here. All I did was mix a box of cake mix, 2 eggs and 1/2 cup melted butter…

lazy bars pic

Next stir in your candies…

lazy bars mixing picture

Spread it all in a 9×13…

lazy bars batter picture

And bake it up. You don’t even have to bake this for very long…just 15-20 minutes.

lazy bars baked picture

Simple bars that are chewy, soft and loaded with candy! WIN!

lazy cookie bars picture

You can mix and match this recipe all over the place. Chocolate cake mix + peanut butter cups. Spice cake mix + Pumpkin Spice M&M’s.

Use your imagination!


Lazy Cookie Bars

  • Author: Cookies & Cups
  • Yield Yield: 24 bars 1x


  • 1 (15.25 ounce) box yellow cake mix
  • 2 eggs
  • 1/2 cup butter, melted
  • 2 cups M&M’s (or any chopped candy you prefer)


  1. Preheat your oven to 350°F/175°C
  2. Line a 9×13 pan with aluminum foil and coat with nonstick spray. Set aside.
  3. In a large bowl combine the cake mix, eggs and butter. Stir until smooth.
  4. Stir in the M&M’s and spread the batter into the pan.
  5. Bake for 15-20 minutes until lightly golden at the edges. The center might seem slightly underdone, this is ok.
  6. Allow the bars to cool completely before cutting into squares.


Store at room temperature for up to 5 days

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Hi! I’m Shelly and I’m an addict. Of the buttercream sort. I started this site a few years ago as a way to justify my sugary, buttery obsession with desserts. It has worked out well for me so far, because as it turns out you guys all love sugary, buttery desserts too! It feels good to know you're not alone, doesn’t it?

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July 30, 2021 7:07 pm

These are so good and so easy! Win win

Lori D Evans
May 23, 2021 2:36 pm

I was going to make the cookies until i saw this bar recipe. WOWZA!! i can just sit and watch my races and let this cook and not spend time scooping dough into cookies. i have 2 bowls, both dark chocolate cake mix, one with white baking chips and the other with chocolate covered pretzels and a cup of white baking chips. can’t wait to share these with some friends. goin to use the oil instead of the butter so will make one first and see how that turns out first.

Connor Cas
February 27, 2021 9:22 am

Dumb question but how many calories are in each bar do you think?

November 18, 2020 9:11 pm

These were awesome! I used a chocolate cake mix, 9oz of Reese’s pieces, and topped with rainbow sprinkles. So good!

October 14, 2020 4:49 pm

I’m thinking chocolate cake and chopped up heath bars as well

Katie Frymier
August 21, 2020 11:10 am

Made them with caramel M&M’s and they were fantastic! You must slightly under bake and there is something very festive with using colorful M&M’s. This is quick and tasty for church potlucks!

July 11, 2020 5:51 pm

Hi! I’m going to use red, white and blue m&m’s for a patriotic dessert, and think a white cake mix will look better than yellow. Usually you only add egg whites to a white cake mix, so I’m wondering if you’ve experimented with that? I think I will add 3 egg whites instead if two whole eggs? Thanks.

Diane W.
May 18, 2020 8:23 pm

Not sure what happened, but these turned out so dry! I took them out at 15 min, when the toothpick was clean. I think I’ll sub oil for butter next time and hope they work better.

January 5, 2020 11:59 am

I’m not going to lie…I was skeptical about this recipe but, boy, was I wrong!! I followed as written and the bars came out fantastic! Incredibly easy and delicious! Will absolutely make again and will try some of the combos from other reviews! Thanks for sharing!

March 13, 2020 4:39 pm
Reply to  Heather

Heather, do I make the cake mix as instructions PLUS the 2 eggs, & butter or cake mix, 2 eggs & butter ??

October 24, 2019 11:12 am

Love this recipe i always have a cake mix on hand and do several different combinations, example: Butter cake mix with dark chocolate chips, devil’s food cake mix with peanut butter chips, strawberry cake mix with white chocolate chips or semi sweet chocolate chips, the combinations are endless. Thank you again for sharing I rate this recipe PLus 5 stars…

February 25, 2019 5:42 pm

I’ve made this twice now – once with a mix of m&ms and reeces piec es and once with just m&ms. They are so easy and a perfect recipe for a toddler to help make. I love hearing other variations from the comments and freezing caramel candies is genius for gooey results.
The second time I made them on a whim and was able to recall what I needed from memory while at grocery so I know I can do that again too!

February 12, 2019 11:29 pm

Thanks for the simple recipe! Everyone loves a delicious cookie bar & these all looked amazing, so why not give it a try. I decided to try & make them they look fantastic. I made these along with some of my own cookie bars. I can not wait to put these in little baggies & share them with the less fortunate, I am sure they will be a hit. I will definitely be letting you know the outcome 🙂 Once again thanks for sharing ..
#the Lord

January 15, 2019 6:45 pm

Your recipe this looks absolutely amazing! Got to add this to my reading list.Thanks for sharing this recipe.

December 15, 2018 2:16 pm

I found this recipe a couple of years ago and love it for the simplicity. I love the way the M&M’s look when it’s finished baking. And so easy to co-ordinate with!

My son asked me to make these with Oreo’s for his birthday. Do you think they’d turn out okay with just the regular oreos, or should I get the fudge dipped ones so there’s something to melt?

December 12, 2018 5:11 pm

Thank you. Sounds good. We will give it a try.

Shelly Hi! I’m Shelly and I’m an addict. Of the buttercream sort. I started this site a few years ago as a way to justify my sugary, buttery obsession with desserts. It has worked out well for me so far, because as it turns out you guys all love sugary, buttery desserts too! It feels good to know you're not alone, doesn’t it?

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