Simply the BEST: Mom’s Legendary Monster Cookies!

Legendary? For real? There I go again with the adjectives, right? Wrong! Ask anyone in my extended family, our friend circle, or any acquaintance within any of my siblings’ generation from my hometown and they will back me up. My mom’s monster cookies are legendary!!! 

This recipe is all thanks to my mom and the countless batches of these cookies she’s made for us over the years. That being said, I want to take a detour here and explain how this legendary recipe affected my husband’s relationship with me and my family. Any of you who have met my husband know that he can seem a bit shy when you first meet him. Any of you who really know my husband know that his true self will come shining through shortly thereafter 😉 For those of you who have never had the pleasure of meeting him, you have no idea what I’m talking about so let me tell you a story.

When I first started bringing my boyfriend-at-the-time-now-husband to my family gatherings he was beyond reserved. He came across as a sweet guy who was super polite and seemed to have taken a liking to me. I knew he was holding back and it was only a matter of time before his other amazing qualities came to light and my family saw why exactly I had fallen for him. After just a few times of him going back home to my parents’ farm with me, my mom started to pick up on his favorite foods. She has always had a tendency to make our favorite foods for us when we visit home and she’s taken that to an extreme level now that each of us have brought home future spouses. She wanted him (like each in-law before and after him) to feel right at home.

It didn’t take more than a few visits before he realized that she nearly always has a batch of these cookies either freshly made or hidden in the freezer. Almost equally as quickly, my mom noticed he seemed wayyyyy less reserved when the cookies were mentioned and, inevitably, passed around for all of us to enjoy. Soon, my sweet-tooth future hubby was not only taking multiple cookies before being offered, but even going so far as to ask about the whereabouts of the cookies himself. Eventually, the power of those cookies had my husband loosened up enough around my family that he felt comfortable enough to join in on the relentless teasing that is known as normal conversation to us.

Soon, my whole family began to realize this man was not nearly as shy as they first thought. He’s still the super sweet and polite guy they saw at first but he’s also now his normal hilarious, quick-witted, and smart self around them. I won’t lie here, I have little doubt that these cookies (along with the rest of the delicious cooking and baking of my family) sealed the deal with my husband falling in love 😉

Thankfully for our marriage, I found that the power of these legendary cookies extends past the boundary of my mom’s kitchen. Imagine my relief when I realized these cookies are actually simple enough that a notoriously failed baker such as myself can bake these delicious godsends! These cookies were a staple in our house when I was growing up, they are still a staple there when we visit home, and now I can make them a staple in my own house too. I can’t begin to tell you all the stories of these cookies but they include them being payment for work done, them being a midnight snack for family sitting around visiting late into the night, them being the core reason of relentless teasing about my perfectionist mom making sure exactly THREE M&Ms are visible on the top of each baked cookie (when I say each cookie, I mean EACH COOKIE of the thousands she has baked in her lifetime!). 

This recipe has been passed around to so many friends over the years that I thought it was only fitting to share with you all too! For those of you bakers, don’t panic when you scan this thinking I made a typo…there really isn’t any flour in this recipe! Now, go ahead and lose any reservations about making a full batch if this is your first time making this recipe. I halved it from the original which makes 4 dozen and believe me, you’ll regret not making at least 2 dozen after the power of these cookies has you falling in love after the first bite!

Mom's Legendary Monster Cookies

  • Servings: Approx 24 cookies
  • Print


  • 3 eggs
  • 1 cup brown sugar
  • 1 cup white sugar
  • 1/4 cup butter or margarine (stick)
  • 1 1/2 cup peanut butter
  • 1 teaspoon dark karo syrup
  • 1 teaspoon vanilla extract
  • 2 teaspoons baking soda
  • 4 1/2 cups quick (minute) oatmeal
  • 1/2 cup chocolate chips
  • 1/2 cup M&Ms (plus some extra for topping!)


  1. Preheat oven to 350 degrees.
  2. In a stand mixer bowl (or large mixing bowl if you don’t have the luxury of a stand mixer), mix the first the eggs, brown sugar, white sugar, & butter/margarine well to cream them and make sure there aren’t any lumps.
  3. Add peanut butter, vanilla extra, baking soda, and dark Karo syrup into that same bowl and mix well until combined.
  4. Next add in the oatmeal and stir well to combine.
  5. Finally, add in the chocolate chips and the M&Ms to mix those throughout the batter.
  6. Drop large spoonfuls of batter onto cookie sheet and make sure to leave room between as they’ll expand. Press down slightly and (if you want to channer my mom, go ahead and make sure there are exactly 3 M&Ms visible on the top of each perfect circle).
  7. Place cookie sheet into preheated oven at 350 degrees for 9-11 minutes.
  8. ***Hint: do not overbake these, they should look puffy and crinkled on top and just very lightly golden brown when you pull them out of the oven!***
  9. Remove from oven and let cool then ENJOY!!!!

Can you smell this from an online picture? Peanut butter & chocolate, oh my!
When the recipe says large spoonfuls and it’s called MONSTER cookies, you better believe this is how I scoop the dough onto the cookie sheet!
Shhhh….don’t tell my mom that I rarely follow her strict 3 M&Ms per top of the cookie rule 😉
Thought some of you may want to know what you’re looking for when pulling these legendary cookies from the oven…super light golden brown, puffy, & cracked tops!
Ladies & gentlemen, I give you…the finished product!
Side note – you’re lucky there are this many cookies in the picture as I had a few ‘helpers’ snagging them for “taste testing” purposes every time I turned around!


  1. says:

    LOVE LOVE this one too….am I suppose to be putting this on a blog tweet, diddle or something…? I am not into all that I just want you to know how much I enjoy them and how proud I am of you. Keep on simplifying!!!!!



  2. Betty Marlenee says:

    Another sweet little story along with a great cookie recipe. Guess it is true, the way to a man’s heart is definitely through his stomach. I’m glad it worked out so well.


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