Cake Mix Cookie Bars

Simple and delicious Cake Mix Cookie Bars - a great "go-to" dessert recipe. { } Soft bars made from yellow cake mix, vanilla pudding, mini m&m's, and chocolate chips!

Hi. It’s me – Lily! Last week I told you I had a big surprise to tell you but I will have to tell you next week. We didn’t finish the pictures in time. 😉 How was your week? I hope it went well. My week was awesome. I got to spend time with my daddy today. It was pretty fun. And I got to see my friend, Michael, who is in my church class.

Today’s recipe is for Cake Mix Cookie Bars. I think cookies are yummy, and I think cake is yummy and this recipe is those things put together. It also has M&MS and chocolate chips which are so good. By the way, I LOVE M&Ms but not as much as Milky Ways. 😉 This recipe was really simple and delicious, and I think you’ll like it.

Simple and delicious Cake Mix Cookie Bars - a great "go-to" dessert recipe. { } Soft bars made from yellow cake mix, vanilla pudding, mini m&m's, and chocolate chips!

Simple and delicious Cake Mix Cookie Bars - a great "go-to" dessert recipe. { } Soft bars made from yellow cake mix, vanilla pudding, mini m&m's, and chocolate chips!

For video instructions, check out:



Cake Mix Cookie Bars:

4 from 1 vote

Cake Mix Cookie Bars

Simple and delicious Cake Mix Cookie Bars - a great "go-to" dessert recipe. Soft bars made from yellow cake mix, vanilla pudding, mini m&m's, and chocolate chips!

Course Dessert
Cuisine American
Prep Time 5 minutes
Cook Time 24 minutes
Total Time 29 minutes
Calories 4485 kcal
Author Lil' Luna


  • 1 box yellow cake mix (I used Betty Crocker)
  • 1 small box White chocolate or vanilla instant pudding mix
  • 1/4 cup water
  • 3/4 cup vegetable oil
  • 2 eggs
  • 1 cup mini M&Ms (divided)
  • 1/2 cup chocolate chips


  1. Preheat oven to 350.

  2. In a large bowl combine cake mix, pudding, water, oil and eggs using a mixer.

  3. Mix until well combined.
  4. Fold in chocolate chips and ½ cup mini M&Ms.
  5. Pour into a greased 9x13 pan.
  6. Sprinkle with remaining M&Ms.
  7. Bake for 24-28 minutes or until golden brown on the edges.
Nutrition Facts
Cake Mix Cookie Bars
Amount Per Serving
Calories 4485 Calories from Fat 2106
% Daily Value*
Total Fat 234g 360%
Saturated Fat 174g 870%
Cholesterol 358mg 119%
Sodium 4039mg 168%
Potassium 364mg 10%
Total Carbohydrates 569g 190%
Dietary Fiber 11g 44%
Sugars 355g
Protein 40g 80%
Vitamin A 18.8%
Vitamin C 1.5%
Calcium 138.2%
Iron 82.5%
* Percent Daily Values are based on a 2000 calorie diet.

Recipe adapted from Parent Pretty.

Here is another bar recipe we love:

Marshmallow Peanut Bars

Peanut Marshmallow Bars - a delicious treat with a peanut butter cookie base, melted marshmallows and topped with peanuts, butter and Peanut Butter Chips! { }

For more delicious bar desserts, check out:

I think your family will love this! They are so yummy. 🙂 I hope you can come back again soon for more yummy treats from me.

Love, Lily

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Thank you Lily for the nice recipe. Have fun this afternoon.


Lily, I love your post and plan on making these really soon!
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Looks so yummy! These would not last long at my house!


Ok, I made these tonight and they were a hit! One thing tho…they did not look like yours. I baked them for 26 minutes and the edges were golden, but the middle was jiggly and it looked just like a baked cake!
I like my cookies gooey, so I took a chance. I let them cool for about an hour and they finally collapsed but very wet in the middle. Like I said, I really like that and so did the kids. I think you could put m&ms on mashed turnips and kids would at least try them!
Don’t know what I would change to get them to bake a little more evenly??
Worth a try (so easy people!)

    Lil' Luna

    Hi Chalene! So glad you liked the bars, but I’m sorry they collapsed in the middle. The only thing I would suggest is baking them 3-5 minutes longer. What size of pan did you use?


      Maybe collapsed is the wrong word. Flattened out may be better? I used a 9×13 glass pan. When I checked on it it looked like a cake. Risen to the top of the pan. Yours looked very flat like abat cookie should. I used a store brand cake mix which could’ve been the culprit? Màybe I shouldn’t add any water next time. I’ll try again soon and let you know!


Hoping to make this tomorrow !!! Do u make the pudding or just put in the pudding mix/powder ????


Made this today to.take to my husband’s work Easter Party. Although they taste delicious they look nothing like yours. 🙁 Mine rose like a cake would rather than stay compacted like a “bar” should. I used a 9×13 metal pan.

Jodi Jacobson

I am so excited to hear the surprise did you have fun playing with your dad and Micheal I hope so


Can I use any flavor of cake mixes. I have so many cake mixes to use up.

    Lil' Luna

    I’m sure you could!! I haven’t tried that, but I’m sure they’d taste fine. If you do that, let me know what you tried!! Thanks!


I got the Duncan Hines cake mix. Do I still use the recipe you provided or do I follow the directions on the box? Thx!

    Lil' Luna

    That shouldn’t change anything. Just follow the recipe, using that:) Let me know if you try that!


Was thinking about using a bit larger pan, that way the bars would be thinner. Have you tried that?

    Lil' Luna

    I haven’t tried that, but I don’t see why they wouldn’t work? If you try it, let me know what size pan you used and how they turned out:) I’d love to know!

Durga Mantra

This looks good! Could make my Monday a lot nicer.


I made these today in a 10×15 jelly pan and they came out like yours!


For those of you who said they didn’t turn out like the photos…check the color of your metal dish (dark vs light metal or glass) and use the appropriate oven temp according to the box. I did this twice using my glass dish. Once at 350 with average results, and once at 375- the higher setting on the box mix for shiny light aluminum and they came out perfect. good luck.


Puedes traducirlo en español me gustaría serlo pero no entiendo lo que dice porfa

Amanda Trudeau

Thank you for sharing these! These are my family’s favorite cookie bar. Today I made cookie bars following your recipe using pumpkin cake mix, white chocolate pudding, 1C cinnamon chips, and 1/2C of white chocolate chips and they are AMAZING!!


Could I use semi sweet chocolate chips instead of milk chocolate?


After reading some reviews where people had problems with these bars setting up, I was weary about making them, but I figured what the heck. I made them per directions, with the exception of the oil, I replaced that with the equal amount of melted butter. I used non-stick baking spray in my pan, and baked it for about 28 min, then allowed it to cool completely before cutting. They came out perfect, both in looks and taste. My grandson loves them, and my husband had one and had to be alone because he was having a moment lol.

    Lil' Luna

    Love hearing that! That is hilarious about your hubby! Thanks for sharing!


    “TY” SO much for your post/tip on using BUTTER instead of oil! Made them for hubbs company picnic. They looked SO good, perfectly brown, looked like photo – Best part, SO EASY! 😋

      Lil' Luna

      SO happy to hear that! They’re always a hit when we make them and it sounds like they were a hit at your husband’s company picnic!


Made these and same problem as other they rose really well then when cooled the edges are good but collapsed in the middle. Was it determine why? They are still really good and I’ll try again because they are so good


Mine turned out more cakey than chewy. Did I over bake them? Took them out at 25 minutes.


I read all the ingredients no where does it list chocolate chips. I quickly read how to make it. I went grocery shopping buying the ingredients I needed. It wasn’t until I started making the recipe that I saw chocolate chips were needed. I did have them in the house so I made them without the chocolate chips. This recipe is very easssy to make. It came out very moist and pretty to look at due to the M&M but its bland. The chocolate chips would have given it that extra flavor. I don’t know if there is a way to revise the recipe, if there is, you really should.


    Kristyn Merkley

    I will add them 🙂 Thanks for catching it! You could add 1/2 to a cup. The more the merrier for me 🙂 Thanks again!

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