Monster Cooke Bars are the perfect treat for any occasion, and the kids will absolutely love them. These soft and chewy bars are packed with chocolate, candies, peanut butter and more!

Monster Cookie Bars Recipe
These Monster Cookie Bars are just as fun to prepare as they are to eat! They contain lots of great ingredients, including oats, peanut butter, and chocolate chips.
Not only can you make these dessert bars to eat at home, but you might also want to prepare them for special events and gatherings with loved ones. They make great gifts and are gobbled up when added to a cookie tray.
Why You’ll Love this Loaded Monster Cookie Bar Recipe:
- Loaded with Goodies: These cookie bars are filled with chocolate chips, M&M’s, oats, and peanut butter. So they’re both delicious and satiating!
- Easy to Make: If you can mix and scoop, you can easily make these monster bars! They are great for beginner bakers and perfect for little hands in the kitchen.

How to Make Monster Cookie Bars
Be sure to see the recipe card below for full ingredients & instructions!
- Beat your peanut butter and eggs together.
- Add your granulated sugar and coconut sugar followed by the vanilla, combining them all together.
- Begin stirring in your oats, sea salt, and baking soda.
- Fold your chocolate chips and chocolate candies into the mixture.
- Spread your dough on the pan.
- Bake for 20-25 minutes in the oven.
- Let the cookies sit at room temperature for a bit before cutting them into squares.

These cookies get their name because they’re a mixture of several ingredients rolled into a single cookie, such as oats, chocolate chips, and more. They are almost like 3 cookies in one!
These Monster Cookies have a sweet taste with a hint of chocolate and peanut butter because of the various ingredients added to them.
Yes, you can. The thick-cut oats give these cookies a great texture, but regular oats will work as well.
If you don’t have coconut sugar, you can use an equal amount of brown sugar in its place.
Yes, you can prepare the dough in advance and then put it into an airtight storage container in the freezer until you’re ready to bake these delicious cookies for everyone to enjoy.
These monster cookie bars are a take on the classic monster cookies that everyone loves. Instead of a cookie, you get a thick and chewy bar of monster goodness.

These bars can be placed in lunch boxes or enjoyed as an after-school snack. They are packed with fiber and protein from the oats and the peanut butter, making them a good option for energy too.
Recipe Tips and Notes
- You can sprinkle more of the chocolate chips and chocolate candies on top of the dough after you’ve spread it out on the baking dish.
- Allow the bars to cool before cutting into them.
- You can use chunky peanut butter to give these cookies even more crunchy texture to bite into.

Everyone will love these monster cookie bars! They are just like the popular cookie version, except thicker and chewier! Whip up a batch of this easy dessert recipe today!
If you make this recipe be sure to leave us a comment or rating. Enjoy!

Monster Cookie Bars Recipe
Ingredients
- 1 cup creamy peanut butter 262 grams
- 2 large eggs 100 grams
- ¼ cup coconut sugar 43 grams
- ¼ cup granulated sugar 61 grams
- 2 teaspoons pure vanilla extract 8 grams
- 1 ½ cups thick cut old-fashioned rolled oats 195 grams
- ½ teaspoon baking soda 3 grams
- ½ teaspoon kosher salt
- ½ cup semisweet chocolate chips 93 grams
- ½ cup candy-coated chocolate candies 105 grams, such as M&M's
Equipment
- Kitchen Scale (optional)
Instructions
- Preheat oven to 350°F. Line an 8×8-inch baking pan with parchment paper and set aside.
- In a medium bowl, using a hand mixer, beat the peanut butter and eggs together until well-combined.1 cup creamy peanut butter, 2 large eggs
- Mix in the coconut sugar and granulated sugar. Add the vanilla and mix to combine. The dough will be thick and sticky.¼ cup coconut sugar, ¼ cup granulated sugar, 2 teaspoons pure vanilla extract
- Stir in the oats, baking soda, and salt.1 ½ cups thick cut old-fashioned rolled oats, ½ teaspoon baking soda, ½ teaspoon kosher salt
- Fold in the chocolate chips and chocolate candies, saving a few to sprinkle on top if desired.½ cup semisweet chocolate chips, ½ cup candy-coated chocolate candies
- Spread the mixture evenly into the prepared baking pan and bake for 20-25 minutes, or until just beginning to brown around the edges.
- Allow the bars to cool to room temperature before cutting into squares.
Notes
- You can sprinkle more of the chocolate chips and chocolate candies on top of the dough after you’ve spread it out on the baking dish.
- Allow the bars to cool before cutting into them.
- You can use chunky peanut butter to give these cookies even more crunchy texture to bite into.
Looks delicious! Do you use two eggs as the recipe states or three as show in the pictures?
2 eggs! Sorry for the confusion!