If you are looking for more yummy bar recipes then these Monster Cookie Bars are perfect. Peanut butter & oats come together into an easy cookie bar recipe that is absolutely delicious!
I have been wanting to make monster cookies for what seems like forever. Every time I see another recipe for them I get inspired & then somehow it never seems to happen.
Probably because sometimes cookies can take a while to make. Letting certain ingredients sit out to come to room temperature, waiting for each batch to bake before the next can go in.
Scroll to the bottom for the Printable Recipe
So it goes, which means I don’t make some cookies all that often. But monster cookie bars are simple, quick & easy to make.
No need to let the ingredients come to room temperature & no chill time either. That is a huge win in my book because when I want a treat, it’s painful to wait.
Monster Cookie Bars Recipe
The family was THRILLED when I finally made these. I had been talking about it for a while & these were so scrumptious.
Just the perfect amount of peanut butter, oats & chocolate. They are the perfect compromise when the hubs wants oatmeal raisin cookies & I always want the chocolate chip.
It’s the best of both worlds all rolled into one. I cut these large, so one is absolutely sufficient for dessert. Although I may or may not have added a scoop of homemade ice cream on top just once.
Here are some commonly asked questions
Can I use butter instead of margarine?
Yes, absolutely, that will work just fine. Just be sure that it is at room temperature and soft before using.
Can I use a hand mixer?
Yes, it is a little more work on the arm – but will work just the same.
Can I use a sugar substitute?
I have not personally tried it, so I can’t say how that would turn out. But if you would like to try it, I suggest a product that offers a 1:1 swap. Please let me know how it turns out.
How many can this serve?
I cut mine into about 20 bars. But you can cut them as small or large as you see fit.
Can this recipe be doubled?
This recipe makes a lot of dough that actually fills my mixer bowl. You could do the batches of dough back to back and then bake them together. But I don’t recommend trying to mix this dough in a double batch.
HOW DO YOU MAKE Monster Cookie Bars?
- Preheat the oven to 350 degrees.
- In the bowl of an electric mixer, combine sugars & margarine & beat until just combined.
- Add eggs & vanilla – mix.
- Add peanut butter – mix.
- Slowly mix in oats & baking soda & mix well.
- Fold in chocolate chips & most of the candies – reserving a handful to adding to the top once baked.
- Spread out into an even layer on a 4 sided baking sheet (either non-stick or lined with parchment) – pressing flat with your fingers or a spatula.
- Bake for 15-18 minutes or until golden. Press the remaining candy into the top immediately after removing from the oven before they cool.
- Allow to cool in pan before cutting.
What is the best way to store leftover Monster Cookie Bars?
The best way to keep them fresh for the longest period of time is to transfer them to an airtight container and keep at room temperature. However, you can just wrap foil over the top of the pan and keep them on the counter too.
To make Monster Cookie Bars you will need…
- brown sugar
- granulated sugar
- margarine
- eggs
- vanilla extract
- creamy peanut butter
- quick-cook oats
- baking soda
- candy coated chocolate candies M&M’s
- dark chocolate chips
Monster Bar
Products I love when making Monster Cookie Bars…
This Monster Cookie Bars recipe is SUPER EASY and delicious – and if you’re like me, then you maybe already have some of these items on hand OR maybe you have never made cookie bars before, & you might be a bit nervous – but you’re going to love them. I have made a list below of the things I absolutely can’t live without when it comes to making this cookie bar recipe.
- 9×13 cake pan
- light brown sugar
- granulated sugar
- vanilla extract
- creamy peanut butter
- quick-cook oats
- baking soda
- spatulas
- M&M’s
- dark chocolate chips
If you love this Easy Monster Cookie Bars recipe, you’re going to love these other treats too. Please click each link below to find the easy, printable recipe!
Cinnamon Roll Sugar Cookie Bars
easy cookie bar recipes
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Monster Cookie Bars
Ingredients
- 1 cup brown sugar
- 1 cup granulated sugar
- ½ cup margarine
- 3 eggs
- 1 tbsp vanilla extract
- 1½ cups creamy peanut butter
- 4½ cups quick-cook oats
- 1 tsp baking soda
- 3 cups candy coated chocolate candies M&M's
- 1 cup dark chocolate chips
Instructions
- Preheat the oven to 350 degrees.
- In the bowl of an electric mixer, combine sugars & margarine & beat until just combined.
- Add eggs & vanilla - mix.
- Add peanut butter - mix.
- Slowly mix in oats & baking soda & mix well.
- Fold in chocolate chips & most of the candies - reserving a handful to adding to the top once baked.
- Spread out into an even layer on a 4 sided baking sheet (either non-stick or lined with parchment) - pressing flat with your fingers or a spatula.
- Bake for 15-18 minutes or until golden. Press the remaining candy into the top immediately after removing from the oven before they cool.
- Allow to cool in pan before cutting.
Nutritional information for the recipe is provided as a courtesy and is approximate. Please double-check with your own dietary calculator for the best accuracy. We at Yummi Haus cannot guarantee the accuracy of the nutritional information given for any recipe on this site.
Mami2jcn says
My mealtime tip is to occupy my kids by having them set the table, get the silverware, napkins, etc. This way they stay out of my way and they’re not fighting.
Mami2jcn says
I retweeted (mami2jcn)
Alexandra robertson says
i prep prep prep. chop all veggies and fruits for the week on sunday and i usually bake off a ton of chicken for quick lunches. or throw ot. in the crockpot for pulled chicken 🙂
Alexandra robertson says
i retweeted a
@alexandrairob 🙂
steve weber says
My best meal time tip is don’t start cooking the vegetables until the main dish is done because you will end up re-heating them.
steve weber says
RTd @groogruxking40
Julie Wood says
I always set a regular time for family meals, turn off the TV, and all electronics. And to keep family meals fun, I Include my kids in the meal preparation and in the decision about what foods will be offered for dinner. This helps my kids get involved in loving to make and eat food, even veges!
I retweeted your tweet at @JewelWood
Amber says
i prep veggies, lentils, quinoa and other quick cooking things on Sunday after my grocery trip- then I can just pull out what I need and reheat or toss in with a dish to save time during the week!
rachel cartucci says
My best meal time tip is I cook two days worth of dinners at once. That way I just can heat up the meal for tomorrow.
rachel cartucci says
retweeted as @rayraycartucci
Cheryl Newton says
Plan ahead, so you’re not scrambling when everybody’s already hungry.
Elena says
I chop the veggies in the morning to save time in the evening when I cook dinner
Elena says
retweeted as @ElenaIstomina
rachel says
I definitely meal plan but adjust my schedule based on what’s on sale at the grocery store.
Amanda Sakovitz says
I do my prep work ahead of time in the day so I’m not running around like a crazy person right before dinner.
Amanda Sakovitz says
retweeted @aes529
shelly peterson says
I like to cook extra so there is enough left overs for another night.
cshell090869 at aol dot com
shelly peterson says
retweeted under @cshell202
cshell090869 at aol dot com
Kelly D says
My best mealtime tip is to serve at least 2 different kinds of veggies so everyone can choose their favorite or even eat 2 servings. This works good for my kids.
Kelly D says
tweet
https://twitter.com/Kellydpa/status/629421171084251136
Tabathia B says
My meal time tip is on a busy night prep the night before and put everything in the crockpot for dinner.
tbarrettno1 at gmail dot com
Tabathia B says
retweeted @chelleb36
Livivua says
Always research a recipe using ingredients already on hand to curve instant shopping trips
Livivua says
I retweeted @vivaciousgold
Amy C. says
My best mealtime tip would be to plan your meals out on Sunday and do all your shopping then so you are set for the week. It takes a lot of the stress out of busy weeknights.