Best Recipe for Monster Cookies

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This quick and easy peanut butter oatmeal monster cookies recipe produces thick cookies filled with chocolate chips and m&m’s. Use your favorite m&m colors to match any theme, holiday, or sports team. You can also find this recipe on page 46 of my cookbook.

But I do think that a solid monster cookie recipe is something every baker should have in their collection, especially when it comes to holidays or special occasions (we’ll get to that part).

And then I remember… Because I will eat them all. Nearly immediately.

No joke, when I made them most recently to update this post, I ate 7 in one day.

No regrets.

But really, is the true reason because they’re just so full of stuff that their real name would be too long?
Is it because they’re such a hodge podge?
Is it because they’re not particularly pretty?

When I first developed this recipe, I used my chewy oatmeal raisin cookies as a guide. I did need to tweak a few things, though, because the peanut butter and all the extra goodies changed the way the batter came together, and after several tries, I landed on the perfect ingredients, amounts, and method for baking.

For these oatmeal monster cookies, you will need:
• quick oats
• all-purpose flour
• baking soda
• ground cinnamon
• salt
• unsalted butter
• light brown sugar
• egg
• creamy peanut butter
• vanilla extract
• m&m’s
• semi-sweet chocolate chips

You’ll need traditional peanut butter for this recipe, the kind with added sugar. Natural peanut butter will not work here.

You’ll want to let the dough rest for about 10 minutes before dropping balls of dough to bake, but aside from that, this cookie dough goes from ingredients to baking sheet pretty quickly.

Use a cookie scoop to drop balls of dough onto the baking sheet, then, very importantly, press down gently on the tops of them to flatten them ever so slightly.

Since these cookies have so much happening in them, they don’t spread a whole lot. If you forget to press down on them, they will taste absolutely fine. They just won’t look as much like a round cookie as much as they will still resemble a large mound of cookie dough.

Will I judge you if you eat them warm from the cooling rack? Nooooo way.

But please take this PSA and know that if you love them fresh, you’ll probably love them even more a day older.

Whether it be Christmas (red and green), Easter (the pastels), Thanksgiving (the fall colors), a baby shower or gender reveal (pink/blue), or maybe you can get extra fancy with special m&m’s for a favorite sports team, you really have so many reasons to make monster cookies in any given year and so many occasions you can coordinate those m&m’s to!

Something else to consider?

Butterscotch, peanut butter, and/or white chocolate chips in place of or in addition to the chocolate chips. Ohh, my my my. Let’s just make monster oatmeal cookies everyday and be done with it. No cookies will ever need to exist ever again.

Ok, that’s a lie. I have TRIPLE DIGITS cookie recipes on my site, and not a single one of them am I willing to get rid of. So… Pick a few, make some batches, sit down with your favorite cookie beverage of choice, and relish in the goodness that is alltheflavors and allthetextures.

And don’t forget to change up those colors! I’ve heard different color combos taste different (we obviously must test multiple batches).