M&M Cookie Bars

by Amy on 21 March 2013

M&M Cookie Barssorry for the lack of posting lately, but being almost 7 months pregnant takes up more time + energy than i expected! =) between prenatal yoga classes, childbirth classes, painting the nursery, + getting furniture ordered, in addition to devoting much-needed time to my job + family/friends, i haven’t been cooking + baking as many new recipes lately. i’m still spending lots of time in the kitchen, but i’m mostly cookin’ up my favorite time-tested recipes, lots of which have already been featured here. but fear not, i’ve got some fab new recipes to share with you over the next few weeks!

this past week, i volunteered to bring a snack to our weekly childbirth class. while i was tempted to bring something uber-healthy, i noticed in past weeks that sweets tended to be better-received by the crowd than healthy veggie platters and such. give the people what they want, i thought, so i made these decadent yet easy-to-prepare M&M cookie bars. + I’m sooo glad I did. while they took mere minutes to prep, they tasted out-of-this-world delicious. they’re rich, fudgy, buttery bars with tons of deliciously melty M&Ms packed into every bite. *swoon* so, if you’re looking for a simple, yet super-tasty dessert to feed a crowd, give these amazing little bars a try!

M&M Cookie Bars

M&M Cookie Bars

makes about 24 bars, adapted from What Megan’s Making


2 1/8 cups all-purpose flour
1/2 teaspoon salt
1/2 teaspoon baking soda
12 tablespoons unsalted butter (1 1/2 sticks), softened
1 cup brown sugar, lightly packed
1/2 cup white sugar
1 large egg
1 large egg yolk
2 teaspoons vanilla extract
1 12oz bag M&M’s, divided


preheat the oven to 325 degrees. adjust the oven rack to lower-middle position. grease a 9×13 pan + set aside.

in a medium sized bowl, whisk together the flour, salt, + baking soda; set aside.

in a large bowl, beat the butter + sugars until light + fluffy. add the egg, egg yolk, + vanilla + mix well. using a rubber spatula, fold the dry ingredients into the egg mixture until just combined; do not overmix. fold in 1 cup of M&M’s + turn the batter into the prepared pan, smoothing the top with the spatula. sprinkle the remaining M&M’s on top + press in slightly.

bake 25-30 minutes, until the top of the bars is light golden brown, slightly firm to the touch, + edges start pulling away from sides of pan. cool completely before cutting.

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{ 62 comments… read them below or add one }

51 Ashley April 21, 2013 at 11:20 pm

I have them in the oven! Attempt 2. They look really good so far… before I put them in I mean. I have the timer set, about 23 minutes left. I know you already have seen my blog, so I am going to just post what happens on it tomorrow. Hopefully I don’t mess them up again! :) thanks!

52 amy April 22, 2013 at 8:49 am

Awesome, I’ll take a look on your blog today + see how they turned out!

53 Nikki April 26, 2013 at 8:36 pm

Best thing I’ve ever made and put in my mouth! Be careful these are sinful!

54 amy April 26, 2013 at 9:49 pm

I’m so glad you liked ’em, Nikki!

55 meg April 28, 2013 at 4:27 pm

just made these and they are quite delicious! I only used 2 cups of flour because after I added that it already seemed so thick. They came out great.

56 amy April 29, 2013 at 6:48 am

I’m so glad you liked ’em, Meg!

57 Joyetta Roy July 7, 2013 at 6:21 pm

These are absolutely amazing, thanks so much for this fantastic recipe!!!

58 amy July 7, 2013 at 6:48 pm

That’s awesome to hear, Joyetta – so glad you liked ’em!

59 Jerri April 13, 2015 at 8:32 pm

Going to bake some now…im no betty Crocker so let’s see what happens

60 Amy April 13, 2015 at 8:57 pm

I bet you will do great, Jerri – report back how it goes! =)

61 Faye August 25, 2015 at 2:37 am

Aloha Fearless Homemaker! This is the 4th time I am baking these, because they are just so yummy. I had a lot of sixlets candies, similar to M&Ms, so I used that instead. I added some cocoa powder, and have used Hersheys choc syrup which is good too. The timer just went off.. so I am off too… Mahalo from Maui Hawaii…..

62 Amy August 25, 2015 at 6:58 am

I am so glad you like them, and I love your additions/changes with the sixlets, cocoa powder and/or chocolate syrup. YUM! So glad you popped by from Hawaii! Some day, I hope to visit your state. =)

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