Monster Cookies Recipe

This post may contain affiliate links.

Beautifully crisp on the outside, chewy on the inside, and served in 40 minutes, you’d never believe how easy these Monster Cookies are to make! With a scoop of peanut butter, a handful of M&Ms, and a few other simple pantry ingredients, you can enjoy these delicious sweet treats for parties, or whenever you want to celebrate life’s special moments!

As my love affair with cookies continues, I want to share my new favorite! Monster Cookies combine all the best parts of peanut butter, oatmeal, chocolate chip, and M&M cookies into one perfect bite.

It doesn’t matter what kind of baking experience you have, this recipe can be easily followed by a novice or a professional. The base of the cookie dough is just your classic mix of ingredients, and then you’ll add in all the fun extras.

You can get creative with your add-ons, depending on the theme of the event or time of year. Try making them with pink M&M’s for Valentine’s Day or add edible googly eyes for Halloween, the possibilities are endless. Whether you’re baking for yourself, your family, or feeding a crowd, these Monster Cookies are sure to be a hit!

Make This Recipe For…

Ingredients to Make Monster Cookies

• White Sugar
• Light Brown Sugar 
• Unsalted Butter – Room Temperature
• Egg
• Peanut Butter – Chunky or Smooth based on personal preference
• Vanilla Extract
• Baking Soda
• Baking Powder
• Salt
• Old Fashioned Oats – you can substitute quick oats if necessary
• All-Purpose Flour
• M&M’s
• Chocolate Chips

PRO TIP: The texture of this cookie dough should resemble the texture of oatmeal cookie dough, or peanut butter cookie dough. It should be thick and easy to scoop and shape.

How To Make Monster Cookies

Just a couple of simple steps, and you can enjoy these cookies in no time!

• Preheat oven to 350°F. Line two baking sheets with parchment paper.
• In the bowl of a stand mixer cream together the sugar, brown sugar and butter. Beat in the eggs, peanut butter, vanilla, baking soda and salt until well combined.
• Using a wooden spoon, fold in the oats, M&M’s and chocolate chips.
• Place 2-3 tablespoons of cookie dough on to the prepared sheets. Bake for 12-15 minutes. Remove from oven and let cookies cool on a rack. Serve and enjoy!

Tips for Making Monster Cookies

• The cookies will spread a good amount as they bake, so make sure that you space them out on the baking sheet properly.
• It’s really important that the butter is at room temp when you cream it together with the sugars. If you use cold butter it will create lumps in your cookie dough that will melt and create pockets while baking.
• I like to use M&M’s in this recipe, but if you want to experiment you can try chopped up KitKat or Reese’s Pieces.

How to Store Monster Cookies

These scrumptious cookies will keep for 5-7 days in an airtight container. If you keep them covered with tinfoil or plastic wrap, they will keep for 3-4 days.

How to Serve These Cookies

Depending on the event you’re serving these for, you can either keep it simple or fancy it up a bit.

If you’re baking these Monster Cookies for a family game night or a movie night with friends, I would keep it simple with a cute platter and some glasses of milk. If you’re baking for a holiday or a special event, you can buy themed M&M’s, they have pink and red for Valentine’s Day or red and green for Christmas and then find a matching serving platter.

Don’t forget…

Rate this recipe below and leave me a comment. I’d love to hear from you!

Follow Me On Pinterest!