No Bake Monster Cookie Bars
Are you ready to indulge in a sweet treat that requires no baking and is packed with all the flavors of your favorite monster cookies? These No Bake Monster Cookie Bars are not only delicious but also easy to whip up in no time! With creamy peanut butter, oats, and chocolate, these bars are perfect for a quick snack or a delightful dessert. Plus, they come together with minimal effort, making them an ideal recipe for busy weekdays or spontaneous cravings. Let’s dive into the deliciousness!
What Makes This Recipe Special

These No Bake Monster Cookie Bars are special for several reasons. First and foremost, they are incredibly simple to prepare. There’s no need for an oven, meaning you can enjoy these bars without the hassle of baking. Secondly, the combination of creamy natural peanut butter, honey, and oats creates a chewy, satisfying texture that’s hard to resist. The addition of chocolate chips and M&Ms takes these bars to the next level, making them a fun and colorful treat for kids and adults alike. And did I mention they’re customizable? You can easily adjust the ingredients to suit your taste or dietary needs.
What You’ll Gather
- 1 cup creamy natural peanut butter (Costco brand is my favorite)
- 1/3 cup honey
- 1 teaspoon pure vanilla extract
- 2 cups old fashioned oats
- 1/4 cup vanilla protein powder*
- 1/2 teaspoon flaky sea salt
- 1 cup semi-sweet chocolate chips
- 1 tablespoon coconut oil
- 2 to 3 tablespoons M&Ms
- Flaky sea salt, for sprinkling on top
*You can use any protein powder you like, but I recommend a vanilla flavor to enhance the taste.
Recommended Tools
- Mixing Bowl: For combining all the ingredients.
- Spatula: To mix and spread the mixture evenly.
- 9×9-inch Baking Pan: This will be the perfect size for your bars.
- Parchment Paper: Makes it easy to lift the bars out of the pan.
- Measuring Cups and Spoons: Accurate measurements are key to the perfect bars.
From Start to Finish: No Bake Monster Cookie Bars

Step 1: Prepare Your Pan
Start by lining a 9×9-inch baking pan with parchment paper. Leave some overhang on the sides to make it easier to lift the bars out later.
Step 2: Mix the Wet Ingredients
In a large mixing bowl, combine the creamy natural peanut butter, honey, and pure vanilla extract. Stir until the mixture is smooth and well blended.
Step 3: Add the Dry Ingredients
To the wet mixture, add the old fashioned oats, vanilla protein powder, and flaky sea salt. Mix everything together until the oats are fully incorporated.
Step 4: Fold in Chocolate and M&Ms
Gently fold in the semi-sweet chocolate chips, coconut oil, and M&Ms until evenly distributed. The chocolate will melt slightly from the heat of the peanut butter, creating a deliciously gooey texture.
Step 5: Press into the Pan
Transfer the mixture into the prepared baking pan. Use your spatula to press it down firmly and evenly. Make sure to pack it tightly so that the bars hold together once set.
Step 6: Sprinkle with Sea Salt
Sprinkle a pinch of flaky sea salt on top for that perfect sweet and salty combination.
Step 7: Chill
Place the pan in the refrigerator for at least 1 hour to allow the bars to set. This step is crucial for achieving the right texture.
Step 8: Slice and Serve
Once the bars are firm, lift them out of the pan using the parchment paper overhang. Slice into squares and enjoy your delicious No Bake Monster Cookie Bars!
Vegan & Vegetarian Swaps

- Peanut Butter: Use almond or sunflower seed butter for a nut-free option.
- Honey: Substitute with maple syrup or agave syrup for a vegan version.
- Protein Powder: Use a plant-based protein powder if desired.
- Chocolate Chips: Opt for dairy-free chocolate chips to keep it vegan.
Common Errors (and Fixes)
- Bars Are Too Crumbly: Ensure you packed the mixture tightly before chilling. You may also need to add a bit more peanut butter or honey to bind it better.
- Too Sweet: If you find the bars too sweet, reduce the amount of honey next time or use unsweetened chocolate chips.
- Not Firm Enough: Make sure to chill them long enough. If you’re in a hurry, pop them in the freezer for about 30 minutes.
- Sticking to the Pan: Always line your pan with parchment paper to prevent sticking.
Storage & Reheat Guide
These No Bake Monster Cookie Bars can be stored in an airtight container in the refrigerator for up to one week. If you want to keep them longer, you can freeze them for up to three months. Just make sure to wrap them tightly in plastic wrap or foil before placing them in a freezer-safe container. To enjoy, simply let them thaw in the refrigerator or at room temperature for a little while.
Common Qs About No Bake Monster Cookie Bars
Can I use quick oats instead of old fashioned oats?
While quick oats can be used, they may result in a slightly different texture. Old fashioned oats provide a chewier bite and help the bars hold together better.
How do I make these bars gluten-free?
To make these bars gluten-free, simply use certified gluten-free oats. Always check the labels on your ingredients to ensure they are gluten-free.
Can I add other mix-ins?
Absolutely! Feel free to add nuts, dried fruit, or any of your favorite add-ins. Just be sure to keep the overall proportions similar to maintain the texture.
How do I cut these bars cleanly?
For clean cuts, make sure the bars are fully chilled and set. Use a sharp knife, and wipe it clean between cuts if necessary.
More Recipes You’ll Love
- Dulce De Leche Brown Butter Chocolate Chip Cookie Bars
- Whole Wheat Chocolate Chip Cookies
- Pumpkin Oatmeal Chocolate Chip Cookies
Make It Tonight
These No Bake Monster Cookie Bars are a delightful combination of flavors and textures, making them a perfect treat for any occasion. Whether you’re preparing a snack for the kids, hosting a party, or just craving something sweet, these bars are sure to please. With easy-to-follow steps and minimal ingredients, you can whip them up in no time. So why wait? Gather your ingredients and make these delicious bars tonight! Enjoy every bite of your sweet creation!

No Bake Monster Cookie Bars
Ingredients
Equipment
Method
- Start by lining a 9x9-inch baking pan with parchment paper, leaving some overhang on the sides.
- In a large mixing bowl, combine the creamy natural peanut butter, honey, and pure vanilla extract. Stir until smooth.
- Add the old fashioned oats, vanilla protein powder, and flaky sea salt to the wet mixture. Mix until fully incorporated.
- Gently fold in the semi-sweet chocolate chips, coconut oil, and M&Ms until evenly distributed.
- Transfer the mixture into the prepared baking pan. Press it down firmly and evenly with a spatula.
- Sprinkle a pinch of flaky sea salt on top for a sweet and salty combination.
- Chill the pan in the refrigerator for at least 1 hour to allow the bars to set.
- Once firm, lift the bars out of the pan using the parchment paper overhang and slice into squares.
Notes
- Store the bars in an airtight container in the refrigerator for up to one week.
- Freeze for up to three months, wrapped tightly.
- For a nut-free option, use sunflower seed butter instead of peanut butter.
