Monster Cookies are chewy, delicious and packed with oats, peanut butter and M&Ms! Naturally gluten free cookies that everyone loves!
I love making cookies – chocolate chip, oatmeal, peanut butter…I love them all! The hardest part is always choosing which kind to make, but I have found an easy solution to that problem with these Monster Cookies. They have everything in them – all in one delicious cookie!
What are Monster Cookies?
Monster Cookies have a little bit of everything in them! They are made with peanut butter, oats, chocolate chips and M&Ms. Many Monster Cookies are made with whole oats, but these ones require the oats to be ground into oat flour first. As a result, the flavor and consistency is absolutely incredible!
Why You’ll Love This Recipe
- It’s easy! These cookies are super simple and easy to make and require no chilling time, so you can easily have a batch of cookies in the oven in no time, meaning snack time isn’t too far away either!
- The ingredients are simple. The ingredients needed for this recipe are pretty basic and simple with the addition of M&Ms, chocolate chips, and oats; these are almost like any good peanut butter cookie recipe. We don’t even need to use flour!
- Every batch makes a ton! You won’t have to worry about running out of cookies any time soon because every batch makes about 36 cookies (that’s 3 dozen!) So go ahead and grab a few at a time or share them with the family and neighbors because there will be plenty to go around.
Ingredients in Monster Cookies
Butter – You will need one stick of butter, softened to room temperature.
Peanut butter – The recipe calls for regular creamy peanut butter. You can use crunchy if you prefer. For best results, avoid more “natural” peanut butters as they don’t tend to work very well in most baked goods.
Sugar & brown sugar – You can’t have cookies without sugar, right?! Make sure your brown sugar is fresh and not dried out for best results.
Eggs – You’ll need 3 large eggs to bind all of the ingredients together.
Vanilla extract – The higher the quality of vanilla, the better. The recipe only calls for 1 teaspoon, but feel free to add a little more if you want!
Baking soda – This acts as the leavening agent in the cookies so make sure it isn’t expired!
Oats – You will need to measure out 4 1/2 cups of old-fashioned oats and place them in a blender to grind into flour. You can just put them in the cookies without grinding them, but I absolutely love the consistency of the cookies when using the oat flour.
M&Ms – I like the mini ones, but you can use regular ones too! I like to mix a cup of them into the batter and then have some extra ones to stick on top of the cookie dough balls right before baking. This makes them more visible, and your cookies will be prettier!
Chocolate chips – I like mini chocolate chips, but regular semi-sweet chips work great too!
How to make Monster Cookies
Prep
Preheat the oven to 350°.
Prepare a baking sheet and then set it aside.
Cream wet ingredients
Cream the butter, peanut butter, sugar, and brown sugar together with an electric mixer for about 2-3 minutes.
Add the eggs and vanilla and mix well.
Add dry ingredients
Add the oat flour and baking soda and mix into the butter mixture until smooth.
Stir in the M&Ms and chocolate chips.
Scoop and bake
Use a cookie scoop to scoop out tablespoonfuls of dough and place on a prepared cookie sheet.
Bake for 8-10 minutes.
Cool and serve
Let the cookies cool for a few minutes on the cookie sheet and then transfer to a wire rack to cool completely.
TIPS FOR MAKING AMAZING MONSTER COOKIES
- Do not melt the butter! The butter needs to be softened (at room temperature), but using melted butter will ruin the cookies.
- Spend a little extra time when you mix the butter and sugars. Creaming them together for 2-3 minutes will improve the consistency of your cookies.
- Preheat the oven. This will help your cookies turn out right every time!
- Don’t over bake the cookies – when I take mine out of the oven, they still look slightly under baked but they will continue to bake on the cookie sheet for a couple more minutes so that’s ok!
Monster Cookies
Ingredients
- ½ cup butter softened
- 1 ½ cups peanut butter
- 1 cup granulated sugar
- 1 ¼ cups brown sugar
- 3 eggs
- 1 tsp vanilla extract
- 2 tsp baking soda
- 4 ½ cups oats grind into flour in the blender
- 1 cup M&Ms mini or regular
- 1 cup chocolate chips
Instructions
- Preheat the oven to 350°.
- Cream the butter, peanut butter, sugar and brown sugar together with an electric mixer for about 2-3 minutes.
- Add the eggs and vanilla and mix well.
- Add the oat flour and baking soda and mix into the butter mixture until smooth.
- Stir in the M&Ms and chocolate chips.
- Use a cookie scoop to scoop out tablespoonfuls of dough and place on a prepared cookie sheet. Bake for 8-10 minutes. Let the cookies cool for a few minutes on the cookie sheet and then transfer to a wire rack to cool completely.
Nutrition
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Are Monster Cookies gluten free?
As long as you use certified gluten-free oats, Monster cookies are completely gluten free without any substitutions! They don’t have any regular flour in them, which makes them the perfect choice for a gluten free treat that tastes absolutely amazing.
What type of peanut butter to use in Monster Cookies?
I usually use creamy peanut butter in Monster Cookies, but you can use crunchy if you prefer. I have found that more natural peanut butters don’t always work very well in baked goods, so for best results, stick to regular peanut butter (like Skippy or Jif).
KITCHEN GADGETS FOR MAKING THE BEST COOKIES
Three kitchen items really help you make the best cookies ever! I actually use these items in nearly every cookie recipe I make, as well as several other types of recipes, so they’re quite versatile.
First, I line my cookie sheets with a piece of parchment paper or a silicone baking mat. They’re sold in sizes that fit a 12×16 cookie sheet perfectly and enable to cookies to bake well without sticking- and no mess from spraying oil on the cookie sheets!
The second item is a KitchenAid mixer. I love mine! I have a Bosch as well but I find I use my KitchenAid for cookies. There is a cookie paddle that comes with every mixer that you attach to the top of the mixer. They’re easy to use and help you mix the ingredients uniformly. Add this to your wish list because it’s one of my all-time used small appliances ever!
The third item is a cookie scoop! Years and years ago I used to use 2 spoons to measure and scrape cookie dough onto the pans. It wasn’t a perfect process and I often ended up with oblong cookies in various sizes. A friend of mine brought cookies to a party and I noticed each and every one of her cookies looked PERFECT. Her secret? A cookie scoop! They come in three sizes- 1/2 tablespoon, 1.5 tablespoon and 3 tablespoon scoops. I used the smallest size- 1/2 tablespoon for these thumbprint cookies.
HOW DO YOU SOFTEN BUTTER?
I like to soften butter by using the defrost function on my microwave. If you need the full 1/2 cup cube of butter, you can leave it in the paper wrapper, otherwise, place the amount of butter you need in a glass or porcelain bowl. I use the lowest defrost setting on my microwave and just let it run for 20 seconds. Check the butter and see how soft it is by pressing it with a rubber scraper. If it is still not soft to the touch, meaning it doesn’t indent when you press into it, let it warm for another 5-10 seconds. Watch it closely! Butter softens very quickly.
Love chocolate and peanut butter? Here are more delicious chocolate peanut butter treats that we love!
- Monster Cookie Bread
- Peanut Butter Blondies
- Easy Peanut Butter Fudge
- No Bake Peanut Butter Banana Fudge Bars
- Chocolate Peanut Butter Pie
- Peanut Butter Cheesecake Bars
- The Best Peanut Butter Chocolate Chip Cookies
- Peanut Butter Banana Chocolate Chip Bread
- Reese’s Peanut Butter Blondies
- Peanut Butter Blossom Cupcakes
- Chocolate Caramel Peanut Butter Bars
- Best Peanut Butter Cup Cookies
- Peanut Butter Chocolate Chip Cookie Bars
- Snickers Peanut Butter Cookies
- Peanut Butter Pretzels
Monster Cookies are chewy, delicious and packed with oats, peanut butter and M&Ms! Naturally gluten free cookies that everyone loves!
Hira says
What kind of oats should i use for these?
Nellie Tracy says
I used rolled oats, but you could probably use quick oats also.
Karen says
Can I use flour in place of oats
Nicole says
I have not tested that substitution so I do not know how it would turn out. Sorry