Skip to Content

Peanut Butter M&M Skillet Cookie

Please share

A chewy peanut butter cookie studded with plenty of peanut butter M&M’s and baked in a skillet. This peanut butter M&M skillet cookie is just waiting for you to take a slice!

Cast iron skillet filled with peanut butter cookie with M&Ms on top.

Chewy peanut butter M&M cookies are always a welcome treat at our house. Baking them into a big skillet cookie makes the process even easier and gives you lots of the best chewy center parts. 

It is peanut butter and chocolate cookie goodness at its finest!

This post was originally from 2015.  I thought it was high time to make this bad boy again.

When I pulled up the post, the pictures of Little Dude melted my heart.  He was always been such a helper.  

I couldn’t bare to take those pictures out. He is just too dang sweet. But I did update the pictures of the cookie itself.

Mixing bowl full of peanut butter cookie dough and peanut butter m&ms.

I will let you read the original post and see the fun pictures of little dude from when he was an itty bitty sous chef.  

I don’t know if you guys know this or not, but I have a sweet tooth.  I thought I might go ahead and fess up to it!  

I also love all things chocolate and peanut butter.  I mean, that does go without saying right?  So I just couldn’t help myself when I saw a bag of peanut butter M&Ms on sale at the store.  

little dude stirring melted butter and peanut butter in a glass mixing bowl.

 I had been wanting to make some cookies, but sometimes cookies take too long!  You have to wait for the butter to come to room temperature, make the dough, put it back in the fridge to firm up, scoop the cookies, bake the cookies.  

 I am a little impatient sometimes (keep your comments to yourself, MiMi!) so I need to have a shortcut.

little dude pressing cookie dough into cast iron skillet.

A skillet cookie solves some of the time issues.  You can use melted butter and can bake it right away because you don’t have to worry about the cookies spreading too far.  

Plus it just takes one trip to the oven, no worry about doing a sheet at a time! 

Little dude pouring extra m&ms on top of skillet cookie.

The melted butter also made it much easier for Little Dude to stir as well.  So it was win, win.

He has so much fun helping in the kitchen.  For this project he got to crack the eggs, dump the ingredients in the bowl, and stir them up.

He also enjoyed pushing the dough  into the skillet and spreading it around.  But his favorite part was putting some more M&M’s on top.  

Our cookie might have been missing an M&M or two, but it was still delicious. 

Peanut butter cookie dough pressed into cast iron skillet with peanut butter m&ms on top.

The cookie slices best if you wait a while first.  Little Dude and I couldn’t wait, so we had crumbly but delicious first slices.     

My husband and a friend were installing some siding for a couple of friends, so Little Dude and I delivered some pieces to them.  The extra wait time made those pieces come out much better.  

slice of peanut butter m&m skillet cookie on plate.

We also loaded up some pieces in the wagon and walked them over to my brothers’ house.  Our cookie delivery service did not get any complaints!   

This cookie is everything you would want from a skillet cookie.  It is thick and soft in the middle with just a little bit of crunch around the edge.  But don’t take it from, try one yourself!

More Cookie Cake Recipes

If you like thick and chewy cookies, frosted sugar cookie bars are for you. They are so much easier than making and frosting a bunch of individual cookies!

For even more fun and color, make funfetti sugar cookie bars. They are perfect for a party.

Check out my collection of dessert bar recipes for even more tasty inspiration!

Cast iron skillet filled with peanut butter cookie with M&Ms on top.

Peanut Butter M&M Skillet Cookie

Servings: 12 Servings
Author: Carlee
A chewy peanut butter cookie studded with plenty of peanut butter M&M’s and baked in a skillet. This peanut butter M&M skillet cookie is just waiting for you to take a slice!
5 from 9 ratings
Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes



  • ½ cup butter
  • ½ cup peanut butter
  • ¾ cup light brown sugar packed
  • ½ cup granulated sugar
  • 1 large egg
  • 2 teaspoons vanilla extract
  • 1 teaspoon salt
  • 3 Tablespoons milk powder optional
  • ½ teaspoon baking powder
  • ¼ teaspoon baking soda
  • cup all-purpose flour
  • 1 bag peanut butter M&M’s


  • Preheat oven to 350°F
  • Melt butter in mixing bowl, then stir in peanut butter.
    ½ cup butter, ½ cup peanut butter
  • Mix in brown sugar and sugar and stir well.
    ¾ cup light brown sugar, ½ cup granulated sugar
  • Add in egg and vanilla and stir until completely uniform.
    1 large egg, 2 teaspoons vanilla extract
  • Stir in the salt, milk powder, baking powder and baking soda until really well mixed.
    1 teaspoon salt, 3 Tablespoons milk powder, ½ teaspoon baking powder, ¼ teaspoon baking soda
  • Stir in flour until just combined. Fold in most of the M&M’s, reserving some to place on top.
    1¾ cup all-purpose flour, 1 bag peanut butter M&M’s
  • Press into a 8 inch skillet or cake pan. Arrange remaining candies on the top of the cookie.
  • Bake for 30-35 minutes.
  • (This is the hardest part!) Wait for at least 45 minutes before cutting and serving. If you jump the gun, it will still taste great but will not hold its shape.


You can replace up to 3/4 cup of the flour with white whole wheat flour.
Why the milk powder? Milk powder adds protein and flavor to the cookie dough, making the resulting cookies a little chewier and adding depth of flavor. You can leave it out if you don’t have any.


Serving: 1ServingCalories: 300kcalCarbohydrates: 38gProtein: 6gFat: 15gSaturated Fat: 7gPolyunsaturated Fat: 6gCholesterol: 36mgSodium: 355mgFiber: 2gSugar: 22g

Nutritional Disclaimer

“Cooking With Carlee” is not a dietitian or nutritionist, and any nutritional information shared is an estimate. If calorie count and other nutritional values are important to you, we recommend running the ingredients through whichever online nutritional calculator you prefer. Calories and other nutritional values can vary quite a bit depending on which brands were used.

Loved this recipe?Pin this recipe for later & follow @cookingwcarlee for more

Please share

5 from 9 votes (6 ratings without comment)
Recipe Rating


Monday 8th of July 2019

That looks so yummy and you have such an adorable helper! Pinned.


Thursday 18th of July 2019

He's a keeper for sure!

Andrea Nine

Wednesday 26th of June 2019

A cookie dreams are made of. You always have the friendliest, tastiest family recipes. I know my family adores them!


Thursday 18th of July 2019

Thank you so much Andrea!

Big Rigs 'n Lil' Cookies

Thursday 17th of September 2015

Looks amazing! And, if I don't save any to share... "I only had one cookie", will be my storie!


Thursday 17th of September 2015

I think that is perfectly reasonable!


Monday 14th of September 2015

I love a good M&M cookie bar and the peanut butter takes it to a whole new amazing level!!!!


Monday 14th of September 2015

Me too and I can't help myself when it comes to peanut butter, so these sorts of treats are dangerous!

Megan Chamberlin

Saturday 12th of September 2015

Oh my delicious, this is amazing!! I love M&Ms, and I love cookies.


Saturday 12th of September 2015

No problem, I love to share tasty treats! Thanks for stopping by!