Nothing completes Halloween without making a batch of my Halloween M&M Cookie Bars. Full of Halloween M&M’s, chocolate chips, and Halloween colored sprinkles! This easy dessert recipe comes together in under an hours time.
My kid’s love M&M cookie bars. I’m finally starting to share my holiday recipes for them. This is something I’ve been making for years, yet I’ve never shared on the blog. I’m happy to finally share this recipe for Halloween M&M Cookie Bars. Thick, ooey-gooey and oh-so chewy cookie bars that will have everyone going back for seconds and thirds!
I love a good warm choocolate chip cookie. I love them in the cookie form, but also enjoy making M&M cookie bars and cookie skillets, as well. Whenever I’m asked to bring a dessert I almost always bring a cookie bar. For Halloween (and most holidays) I love adding in a specific color of M&M plus sprinkles! They bake perfectly into the bar and melt into your mouth.
Table of contents
Why This Recipe Works
You’ll love this recipe because it requires just 10 minutes to put together.
Your home will smell amazing
Everyone who has ever ate one of my Halloween Cookie Bars always comes back for seconds!
What do you need to make Halloween M&M Cookie Bars?
Here are a few of the kitchen tools and sponsored products I used to make these Halloween M&M Cookie Bars.
- KitchenAid Stand Mixer
- OXO Measuring Cups & Spoons
- GIR Silicone Spatula
- Pyrex Glass 9×13 Baking Dish
- Pot Holders
- Sweets & Treats Sweet Sprinkles Mix: Monster Mash
- Sweets & Treats Chevron Goodie Bags: Lime Green
- Sweets & Treats Dot Goodie Bags: Purple
- Sweets & Treats Rugby Stripe Goodie Bags: Orange
- Adams Extract Adams Best Vanilla Flavor
- Dixie Crystals Brown & Granulated Sugars
How do you make Halloween M&M Cookie Bars?
- Preheat the oven to 350 degrees Fahrenheit.
- Place the room temperature butter in the KitchenAid Stand Mixer. Then pour in the granulated and brown sugar. Cream on low for 1 minute until incorporated. Then, slowly add in the eggs and vanilla extract. Mix on medium for 1 minute.
- Turn off the mixer. Add in the all-purpose flour, baking soda, and salt. Mix on low and then gradually increase speed to medium for 1 minute. Reduce the speed to low and add in 1-½ cups M&M’s and sprinkles. Mix until just incorporated.
- Spray a 9×13 glass pan with cooking spray. Using a silicone spatula, scrape the cookie dough contents into the glass pan. Smooth out until even. Add the remaining ½ cup M&M’s to the top of the pan.
- Bake for 30-35 minutes or until golden in color. Remove from the oven and let rest for 30 minutes before cutting. Store in an air tight container for up to 5 days.
Tips & Tricks
Here are a few of my favorite tips & tricks whenever I make M&M cookie bars.
- Make Ahead – You can make the cookie dough up to two days ahead of time. Place in a baking tray, covered, and refrigerated and then bake when your ready to enjoy.
- M&M’s – Any style M&M’s will do but for this recipe I prefer the Halloween style.
Halloween Recipes
If you make this cookie bar recipe, I would be honored and love for you to take the time to leave a star rating and comment! I spend hours developing and testing these recipes, and always love to hear feedback and user experience!
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Halloween Cookie Bars
Equipment
- KitchenAid Stand Mixer
- Oven
Ingredients
- 2 sticks of salted butter room temperature
- 1 cup Granulated Sugar
- 1 cup Brown Sugar
- 3 large eggs
- 2 teaspoons Adams Extract Pure Vanilla
- 3 cups All-purpose flour
- 1 teaspoon Baking soda
- ½ teaspoon Salt
- 2 cups M&M's Orange, Green, and Purple M&M'S
- ¼ cup Sweets & Treats Sweet Sprinkles Mix: Monster Mash
Instructions
- Preheat the oven to 350 degrees Fahrenheit.
- Place the room temperature butter in the KitchenAid Stand Mixer. Then pour in the granulated and brown sugar. Cream on low for 1 minute until incorporated. Then, slowly add in the eggs and vanilla extract. Mix on medium for 1 minute.
- Turn off the mixer. Add in the all-purpose flour, baking soda, and salt. Mix on low and then gradually increase speed to medium for 1 minute. Reduce the speed to low and add in 1-½ cups M&M’s and sprinkles. Mix until just incorporated.
- Spray a 9×13 glass pan with cooking spray. Using a silicone spatula, scrape the cookie dough contents into the glass pan. Smooth out until even. Add the remaining ½ cup M&M’s to the top of the pan.
- Bake for 30-35 minutes or until golden in color. Remove from the oven and let rest for 30 minutes before cutting. Store in an air tight container for up to 5 days.
Notes
- Make Ahead – You can make the cookie dough up to two days ahead of time. Place in a baking tray, covered, and refrigerated and then bake when your ready to enjoy.
- M&M’s – Any style M&M’s will do but for this recipe I prefer the Halloween style.
Nutrition
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Christie
I could devour several of these. They look so moist and delicious. And super fun with the sprinkles.
Jaida ~ Sweet Beginnings
I love that you like using different colored M&Ms for different holiday baking – I do the same with candy corns! Did you know they make them in Christmas colors, Valentine’s and Easter, too?? I have so much fun coming up with desserts to use them in. And M&Ms are great that way, too – these cookie bars look great!
Katie
Yes! I buy the large containers for each holiday! I actually still have some patriotic red, white, and blue M&M’s in my pantry from the summer!
Nancie McDermott
Baking one gigantic cookie and cutting it up: Heaven! These are special to the eaters, but easy on me the cook! Excellent Halloween party treat.
Katie
Yes–always a fan of easy on the cook!
Karyn M Granrud
We love cookie bars! It’s so much easier to bake an entire pan of cookies instead of baking sheet after sheet. YUM!
Katie
Yes! My go-to since having kids! Aint no one have time to make individual cookies over here! 😉
Amy (Savory Moments)
I looovvveeeee cookie bars and these ones look super good!
Dorothy Reinhold
High quality vanilla makes the biggest difference! I love using a well loved treat and adding some holiday fun!
Julie @ Back To My Southern Roots
I love these cookie bars. They look absolutely divine, and I love the festive Halloween colors!
Katie
Thank you!