If you love the perfect combination of peanut butter, chocolate chips, and oats in a chewy, bakery-style cookie, then this monster cookie recipe is for you. These chewy monster cookies bring together the best of oatmeal cookies, peanut butter cookies, and chocolate chip cookies in one irresistible bite. They are packed with creamy peanut butter, quick oats, and chocolate chips, creating a delightful texture that is soft, chewy, and slightly crisp on the edges.
Unlike traditional chocolate chip cookies, these cookies are flourless, making them naturally gluten-free (as long as you use certified gluten-free oats). The combination of peanut butter and oats gives them a rich, nutty flavor, while the chocolate chips and M&M candies add bursts of sweetness.
Whether you need a quick dessert for a family gathering, a treat to satisfy your sweet tooth, or a freezer-friendly cookie dough option for busy days, these monster cookies are an excellent choice. They stay soft for days, making them perfect for meal prepping or gifting.
In this recipe, I’ll walk you through the simple steps to make the best chewy monster cookies ever, along with expert tips to ensure they turn out super soft and perfectly baked every time. Let’s get started!
Table of Contents
Key Benefits :
1. Soft and Chewy Texture
One of the biggest appeals of this monster cookie recipe is its chewy, soft texture. Thanks to the combination of creamy peanut butter, oats, and just the right amount of baking soda, these cookies stay soft for days while maintaining a slight crisp on the edges. If you love chewy monster cookies, this recipe delivers that perfect bite every time.
2. Naturally Gluten-Free (Flourless Option)
Traditional cookies often require flour, but these monster cookies are naturally flourless, making them a great option for those looking for gluten-free desserts. By using certified gluten-free oats, you can enjoy a safe, gluten-free monster cookie recipe without sacrificing flavor or texture.
3. Loaded with Peanut Butter Flavor
If you’re a fan of peanut butter cookies, these monster cookies take that love to the next level. They are packed with peanut butter, which gives them a rich, nutty taste. Using creamy peanut butter ensures the cookies remain super soft, while natural peanut butter can add a slightly deeper peanut flavor.
4. Perfect for Freezing and Meal Prep
These cookies freeze exceptionally well, whether you freeze the cookie dough balls before baking or store the baked cookies for later. You can bake frozen cookie dough balls straight from the freezer—just add an extra 1-2 minutes to the bake time. This makes them a fantastic option for busy weeks when you need a quick homemade treat.
5. Easy to Customize
This monster cookie recipe is incredibly versatile. You can switch up the add-ins based on your preferences. Some fun variations include:
- Dark chocolate chips instead of regular chocolate chips for a richer taste.
- Almond butter instead of peanut butter for a unique flavor.
- Chopped nuts (like walnuts or pecans) for added crunch.
- White chocolate chips or butterscotch chips for a sweeter twist.
6. No Chilling Required
Many cookie recipes require chilling the dough before baking, but this monster cookie recipe doesn’t require chilling. The dough holds its shape well, meaning you can scoop, bake, and enjoy without waiting.
7. Great for Any Occasion
Whether you’re making cookies for holiday gatherings, birthday parties, or a simple weekend treat, these chewy monster cookies are always a hit. They also make fantastic giftable cookies—just pack them in a decorative tin for a thoughtful homemade treat.
Ingredients :
To make the best chewy monster cookies, you’ll need a handful of simple, pantry-friendly ingredients. Each one plays a crucial role in achieving the perfect texture and flavor.
Main Ingredients
- 1 cup creamy peanut butter – The key ingredient that gives these cookies their signature peanut butter flavor and keeps them soft and chewy. Avoid using natural peanut butter, as it can make the dough too runny.
- ½ cup unsalted butter, softened – Helps create a rich, buttery texture while allowing the cookies to spread just right. If using salted butter, reduce the added salt.
- 1 cup brown sugar, packed – Provides moisture and a chewier texture compared to white sugar.
- ½ cup granulated sugar – Balances the sweetness and gives a slight crisp to the edges.
- 2 large eggs – Acts as a binder, ensuring the cookies hold together while staying soft.
- 1 teaspoon vanilla extract – Enhances the overall flavor profile.
- 2 cups quick oats – Creates a chewy texture while absorbing moisture for the perfect consistency. You can use rolled oats for a more textured bite.
- 1 teaspoon baking soda – Helps the cookies rise and stay light while baking.
- ½ teaspoon salt – Balances the sweetness and enhances the flavors.
Add-Ins for the Ultimate Monster Cookie
- 1 cup chocolate chips – A mix of semi-sweet or milk chocolate chips adds bursts of chocolate in every bite.
- ½ cup M&M candies – A classic monster cookie add-in that adds color, crunch, and a fun sweetness.
- ½ cup chopped nuts (optional) – Walnuts, pecans, or almonds add a nice crunch.
- ½ cup raisins or dried cranberries (optional) – A great alternative if you prefer a fruitier flavor.
Optional Variations
- For a healthier twist: Use natural peanut butter and reduce the sugar slightly.
- For extra chewiness: Add 1 tablespoon cornstarch to the dry ingredients.
- For a nut-free version: Substitute sunflower seed butter for peanut butter.
- For a double chocolate version: Mix in ½ cup cocoa powder with the dry ingredients.
How to make soft-baked Monster Cookies:
Follow these simple steps to make the best chewy monster cookies with perfect texture and flavor every time.
Step 1: Preheat the Oven & Prepare the Baking Sheets
Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper or silicone baking mats to prevent sticking and ensure even baking.
Step 2: Cream the Butter and Sugars
In a large mixing bowl, use a hand mixer or stand mixer to cream together the unsalted butter, creamy peanut butter, brown sugar, and granulated sugar until the mixture is light and fluffy (about 2-3 minutes). Scrape down the sides of the bowl to ensure all ingredients are well combined.
Step 3: Add the Wet Ingredients
Beat in the eggs, one at a time, mixing well after each addition. Then, add the vanilla extract and mix until fully incorporated.
Step 4: Mix the Dry Ingredients
In a separate bowl, whisk together the quick oats, baking soda, and salt. Slowly add this dry mixture to the wet ingredients, mixing on low speed until just combined. Avoid overmixing, as this can make the cookies tough.
Step 5: Fold in the Add-Ins
Gently fold in the chocolate chips, M&M candies, and any optional add-ins (chopped nuts or raisins) using a spatula. This step ensures an even distribution of mix-ins throughout the dough.
Step 6: Scoop and Shape the Dough
Using a cookie scoop (or about 2 tablespoons of dough per cookie), roll the dough into balls and place them 2 inches apart on the prepared baking sheets. The cookies will spread slightly while baking.
Step 7: Bake the Monster Cookies
Place the baking sheets in the preheated oven and bake for 10-12 minutes, or until the cookies look set but still slightly soft in the center. They will continue to firm up as they cool.
Step 8: Let the Cookies Cool
Remove the cookies from the oven and let them cool on the baking sheets for 5 minutes before transferring them to a wire rack. Let them cool completely to allow the flavors to develop fully.
Step 9: Store or Freeze for Later
- Storage: Keep cookies in an airtight container at room temperature for up to 5 days.
- Freezing: These cookies freeze well for up to 3 months. Store baked cookies in a freezer-safe bag, or freeze unbaked cookie dough balls and bake when needed. No need to thaw—just add 1-2 extra minutes to the bake time.
Pro Tips and Variations :
To ensure your monster cookies turn out chewy, soft, and delicious every time, follow these expert tips and explore different variations to customize your cookies to your liking.
Pro Tips for Perfect Monster Cookies:
1. Use the Right Peanut Butter
For the best chewy texture, use processed creamy peanut butter like Jif or Skippy. Natural peanut butter can separate and make the dough too oily, affecting how the cookies bake.
2. Don’t Overbake
Cookies may still look soft in the center when you take them out of the oven—this is exactly what you want. They will firm up as they cool but remain chewy on the inside.
3. Let the Dough Rest for Better Texture
While this recipe doesn’t require chilling, letting the dough rest for 10–15 minutes before baking allows the oats to absorb moisture, resulting in even chewier monster cookies.
4. Avoid Overmixing
Overmixing the dough, especially after adding the oats, can make the cookies dense and tough instead of soft and chewy. Mix just until combined.
5. Use a Cookie Scoop for Even Baking
A cookie scoop ensures all cookies are the same size, which helps them bake evenly. This prevents some from being overbaked while others remain underbaked.
6. Add More Mix-Ins for Extra Flavor
For cookies packed with peanut butter flavor and texture, try adding:
- ½ cup chopped walnuts or pecans – Adds crunch and a nutty flavor.
- ½ cup shredded coconut – Enhances chewiness.
- ½ teaspoon cinnamon – Gives a subtle warmth to the flavor.
- Extra chocolate chips and M&Ms – For a richer taste and more color.
7. Freeze for Easy Prep
You can freeze cookie dough balls for up to 3 months and bake them straight from the freezer. Just add 1-2 extra minutes to the bake time.
Delicious Variations to Try:
1. Double Chocolate Monster Cookies
Swap ¼ cup of oats for ¼ cup cocoa powder and use dark chocolate chips for a rich, chocolaty twist.
2. Nut-Free Monster Cookies
Use sunflower seed butter or almond butter instead of peanut butter to make them allergy-friendly.
3. Healthier Monster Cookies
- Reduce the sugar by ¼ cup for a lower-sugar option.
- Use dark chocolate chips instead of milk chocolate for antioxidants.
- Swap half the butter for unsweetened applesauce to cut fat.
4. Protein Monster Cookies
Add 1 scoop of vanilla or chocolate protein powder and an extra 2 tablespoons of peanut butter for a high-protein treat.
5. Holiday-Themed Monster Cookies
Use red and green M&Ms for Christmas, pastel M&Ms for Easter, or orange and black candies for Halloween to make festive cookies for special occasions.
Serving Suggestions :
These chewy monster cookies are perfect for any occasion, whether you’re serving them fresh out of the oven or saving them for later. Here are some creative ways to enjoy them:
1. Classic with a Glass of Milk
There’s nothing better than a warm monster cookie with a cold glass of milk. The rich peanut butter, chocolate chips, and oats pair perfectly with dairy or plant-based milk for a comforting treat.
2. Ice Cream Sandwiches
Turn these monster cookies into an indulgent dessert by making ice cream sandwiches:
- Let the cookies cool completely.
- Add a scoop of vanilla, chocolate, or peanut butter ice cream between two cookies.
- Freeze for 30 minutes to firm up before serving.
3. Crumbled Over Yogurt or Oatmeal
For a delicious breakfast or snack, crumble a cookie over Greek yogurt or warm oatmeal for added texture and sweetness.
4. Dunked in Coffee or Hot Chocolate
The chewy texture of these cookies makes them great for dunking into hot drinks. Pair them with:
- Black coffee or espresso for a rich contrast.
- Hot chocolate for an extra indulgent treat.
- Chai tea or vanilla almond milk for a warming, spiced flavor.
5. Dessert Charcuterie Board Addition
For parties or gatherings, serve these cookies as part of a dessert charcuterie board alongside:
- Brownies, shortbread cookies, or chocolate truffles
- Fruits like strawberries, bananas, and apple slices
- Nut butter or caramel for dipping
6. Crushed and Used as a Pie Crust
Turn leftover cookies into a delicious homemade pie crust:
- Crush the cookies in a food processor until fine.
- Mix with melted butter and press into a pie dish.
- Use as a base for chocolate, peanut butter, or ice cream pie.
7. Make a Cookie Butter Spread
Blend leftover cookies with a little melted butter and cream to create a cookie butter spread. Use it as a dip for fruit, spread on toast, or swirled into ice cream.
8. Party or Gift-Worthy Treats
- Package the cookies in a decorative tin or gift bag for a thoughtful homemade gift.
- Make mini monster cookies for party favors or holiday platters.
These versatile monster cookies are more than just a sweet treat—they’re an easy way to make any moment special.
These chewy monster cookies with peanut butter are the ultimate combination of soft, chewy texture and rich flavors, making them a must-try for any cookie lover. With creamy peanut butter, oats, chocolate chips, and M&Ms, they deliver the perfect balance of sweetness, crunch, and chewiness in every bite.
One of the best things about this monster cookie recipe is its simplicity and versatility. Whether you’re baking for a quick snack, meal prepping for the week, or making a batch for a special occasion, these cookies stay soft for days and can easily be customized to suit your preferences. Plus, they freeze well, making them a convenient treat whenever you need one.
By following the pro tips and customization ideas in this guide, you can make the best monster cookies ever—ones that will impress your family, friends, and even yourself!
Now that you’ve got all the details, it’s time to preheat your oven and start baking. Whether you enjoy them warm with a glass of milk, crumbled over yogurt, or transformed into ice cream sandwiches, these cookies are guaranteed to become a new favorite in your home.
FAQs
Here are answers to some of the most commonly asked questions about making chewy monster cookies.
1. What is the secret to making cookies soft?
The key to soft and chewy cookies is moisture retention. Using brown sugar, peanut butter, and butter helps keep the cookies soft for days. Also, be sure not to overbake them—take them out when the centers look slightly underdone, as they will firm up as they cool.
2. What makes a cookie soft instead of hard?
The right balance of fat and sugar plays a major role. Brown sugar adds moisture, while butter and peanut butter keep the cookies rich and tender. Avoid overmixing the dough and don’t overbake to prevent them from becoming hard.
3. Why are my monster cookies dry?
If your cookies turn out dry, it could be due to:
Too much flour or oats—Stick to the exact measurements.
Overbaking—Remove the cookies when the centers still look slightly soft.
Not enough fat—Make sure to use real butter and creamy peanut butter.
Overmixing—Mix just until combined to avoid tough, dry cookies.
4. How to make cookies more chewy?
For extra chewiness, try these tips:
Use more brown sugar than white sugar for added moisture.
Add 1 tablespoon of cornstarch to the dry ingredients.
Use quick oats instead of old-fashioned oats—they absorb moisture better.
Chill the dough for 10–15 minutes before baking for a thicker, chewier texture.
5. Can you use old-fashioned oats in monster cookies?
Yes, but they will give the cookies a heartier, more textured bite. If you prefer a chewier texture, stick with quick oats, as they blend more smoothly into the dough.
6. Are cookies supposed to be soft after baking?
Yes! Monster cookies should look slightly soft in the center when you remove them from the oven. They will continue to firm up as they cool but remain chewy and tender. Overbaking can make them too crisp and dry.
Monster Cookie Recipe
Ingredients
- Main Ingredients
- 1 cup creamy peanut butter
- ½ cup unsalted butter softened
- 1 cup brown sugar packed
- ½ cup granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- 2 cups quick oats
- 1 teaspoon baking soda
- ½ teaspoon salt
Instructions
- Preheat the Oven & Prepare the Baking Sheets
- Cream the Butter and Sugars
- Add the Wet Ingredients
- Mix the Dry Ingredients
- Fold in the Add-Ins
- Scoop and Shape the Dough
- Bake the Monster Cookies
- Let the Cookies Cool