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:
  • Yield: 24 bars


  • 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


Leave a Reply

34 Comments on "Lazy Cookie Bars"

Sort by:   newest | oldest | most voted
Samina @ The Cupcake Confession

Oh I love these bars! I love how the color from the M n Ms have mixed together inside, they look like rainbows! 🙂


Growing up my mom would always make a few mnm cookies when she made chocolate chip cookies and those were always my faves so I know I’d love these!!! They looks so incredibly chewy!

Cara Owens

These bars look so yummy! Been following your blog for years and I have to say I’m a huge fan! Congratulations on the cookbook and thank you for all of the wonderful recipes/ideas for making treats with my boys. Have a great monday!:)


These bars are so cute and so colorful!


I’m sorry your little guy was sick. 🙁 My kiddo has pneumonia, and of course I did not let him go trick or treating in the cold, and he too thought life was over. He’s 10 and his friends came to our door and brought him some candy, 2 big bags of M&M’s and Hershey chocolate bars, which was really cool of them to do.
These cookies are so much fun and versatile. I think I will steal some of his M&M’s and make them. 🙂
Hope everyone is well now in your house!

Lori R

Has anyone tried these with those unwrapped Snickers bits????

Marion G.

These sound wonderful!! I am going to make these with chocolate cake mix and Reeses pices! Oh my!!! Thank you!!


You had me at lazy… 😉


Perfect recipe for my left over sweets, i love this idea.. and easy and simle.. brilliant

Many Thanks


Coco in the Kitchen

Love M&Ms in cookies. They always remind me of bake sales back when I was in elementary school.


Looks yummy! And so easy. Thanks!

Jessica @ Sweetest Menu

Magical! Cookies that can be made in a hurry and stuffed with candy? I am so there!


These look insanely good! We made out on m&ms this year too!
And sorry your little one was sick! Sick kiddos during the holidays is so sad!


This recipe turned out horrible!! When I mixed the cake mix, eggs, and melted butter together, the mix was so dry that I had to add water! Actual bake time for mine was 25 mins! Horrible recipe. I ended up throwing them out.


I have no eaten them because I’m making them for other people, but when I cut them into squares they still seem a little too gooey. Is that just normal? I’ve never had cookie bars before.


These are good. Love your recipes. Can I add 4 ounces of cream cheese to the mix?


These turned out yummy!! Have you ever tried it with chocolate cake mix? Kinda like a brownie bar!!

Michelle Nelson

I just made these and they turned out perfectly! I thought the recipe may be dry also, but no, it came out just as you mentioned. I also used the Pillsbury 15.25 moist supreme cake mix. When I put my batter in the pan I was unsure if it would all fit and if it would rise. And it did! They’re great! Thank you for an easy goodie!!?


[…] Lazy Cookie Bars (Cookies & Cups) […]


I actually made this for former co-workers this morning. I was up late last night making an egg nog bundt cake and chocolate crinkle cookies. I wanted something else, but at 6am this morning, I didn’t have the energy for anything super fancy. I used a carrot cake mix and white chocolate chips since it seemed like a good Holiday-time combo. Everyone loved it so this is a good fit! 🙂


Very yummy recipe. The bars turn out great! My oven ALWAYS takes longer than the max time on recipes, so I accounted for that. When the outside edge got a little bit of golden color, I took them out. I was a little worried about the soft center, but after they completely cooled, they were fine! Thanks for this gem!


These look sooooo good and sooooo easy. I imagine it would work with any flavor mix and any candy combination. Can’t wait to give it a try! Thanks!


These are so easy and so good, thanks for sharing!