Craving the classic comfort of monster cookies but seeking a healthier, guilt-free twist? Look no further! This comprehensive guide and recipe for Flourless Monster Cookies offers the perfect solution. Imagine delightfully chewy, sweet, and salty cookies that cater to a healthier lifestyle and are incredibly easy to make gluten-free. Forget the traditional flour-laden versions; these treats redefine indulgence without compromise.
These aren’t just any cookies; they’re a revelation for anyone looking to enjoy their favorite flavors while adhering to dietary preferences or simply aiming for a more wholesome snack. Whether you’re a seasoned baker or a kitchen novice, our simple, straightforward recipe ensures a batch of perfect monster cookies every time.
More Delicious & Wholesome Treats to Explore
If these healthy monster cookies pique your interest, you might also enjoy these other delightful recipes:
- 23 M&M Desserts That Will Melt Your Heart
- Soft Batch Monster Cookies
- Healthy Peanut Butter Chocolate Chip Oat Cookies

Why These Flourless Monster Cookies Will Become Your New Favorite
Monster cookies have long been a beloved treat, cherished for their vibrant colors and satisfying combination of flavors. However, traditional recipes often come with a heavy dose of flour and sugar, making them less ideal for those monitoring their intake. Our flourless version changes the game entirely, offering all the delightful chewiness and robust flavor you love, but with a significantly healthier profile.
The Magic of Baking Without Flour
You might wonder how a cookie can be “yummy” without flour. The secret lies in the incredible power of peanut butter and oats. Peanut butter acts as a fantastic binder, providing structure and that signature rich flavor, while oats contribute to a wonderfully chewy texture and offer a host of nutritional benefits. This clever combination eliminates the need for wheat flour, making these cookies naturally gluten-free when using certified gluten-free oats. It’s a simple swap that makes a world of difference for taste and dietary inclusivity.
A Healthier Path to Indulgence
Many traditional cookies, including monster cookies, are notorious for being packed with unhealthy ingredients that can quickly derail healthy eating habits. This recipe, however, champions wholesome, natural components. By focusing on ingredients like natural peanut butter, oats, and the option to control your mix-ins, you’re creating a snack that satisfies your sweet tooth while nourishing your body. You can load them up with your favorite candies and chocolate chips, or opt for a lighter touch – the choice is entirely yours, giving you complete control over your indulgence.
A Celebration of Classic Flavors and Textures
For those who adore the classic pairing of oats and peanut butter, these cookies are a dream come true. Imagine the comforting chewiness of oats combined with the creamy, nutty richness of peanut butter, punctuated by bursts of chocolate chips and colorful M&Ms. It’s a symphony of textures and flavors that truly hits the spot. This recipe embraces these beloved elements, delivering a cookie that’s both familiar and excitingly new in its healthy rendition. They are so good, you might just find yourself reaching for a second (or third)!
Perfect for the Whole Family
These healthy peanut butter chewy monster cookies are an excellent snack choice for the entire family. They are quick to prepare, making them ideal for busy weeknights or impromptu baking sessions. With just a few simple steps, you’ll transform basic pantry staples into a healthier version of a traditional cookie that satisfies every craving. Plus, knowing they’re packed with good-for-you ingredients makes them a parent-approved treat everyone can feel good about enjoying.
Unleash Your Inner Baker with Easy Customization
One of the greatest joys of this recipe is its incredible versatility. Whether you have specific dietary needs or simply love to experiment with flavors, these cookies are endlessly adaptable. Easily make them gluten-free by simply choosing certified gluten-free oats. Beyond that, the add-ins are your canvas! Swap out M&Ms for other candies, nuts, or dried fruits. The possibilities are only limited by your imagination, allowing you to create a unique batch tailored to your preferences every time you bake.
Prepare to make these flourless monster cookies your new go-to guilt-free dessert option. So, don your apron, preheat your oven, and let’s dive into the delicious world of healthy baking!

Essential Ingredients for Healthy Flourless Monster Cookies
Crafting these amazing healthy flourless and optionally gluten-free monster cookies requires a few key ingredients. Here’s what you’ll need to gather to create this delightful treat:
- Peanut Butter: ¾ cup creamy or crunchy peanut butter. For a healthier option, choose sugar-free or natural peanut butter. Brands like Jif, Skippy, or any natural variety work well.
- Butter or Applesauce: ¼ cup unsalted butter, softened. For a lighter version, substitute with ¼ cup unsweetened applesauce.
- Brown Sugar: ⅔ cup packed brown sugar. You can also experiment with your favorite healthy sweetener alternatives if preferred.
- Eggs: 2 large eggs, which act as an additional binder and contribute to the cookie’s texture.
- Vanilla Extract: 1 teaspoon of vanilla extract to enhance the overall flavor profile.
- Oats: 1 & ⅓ cups quick oats or gluten-free quick oats. You can also use old-fashioned oats or gluten-free old-fashioned oats for a chewier texture. A mix of both quick and old-fashioned oats also works beautifully. For thicker cookies, consider adding up to an extra ¼ cup of oats.
- Baking Soda: ½ teaspoon baking soda, essential for leavening and creating a soft, tender crumb.
- Baking Powder: ½ teaspoon baking powder, working alongside baking soda for optimal rise and texture.
- Salt: A generous pinch of salt. Add ½ teaspoon if you prefer a more pronounced sweet and salty contrast.
- Chocolate Chips: ½ cup semisweet chocolate chips. Dark chocolate chips are also a great healthy alternative.
- M&M’s: ½ cup M&M’s candies. Reese’s Pieces or other small candies can be substituted for variety.
- Additional Mix-ins: ½ cup of your favorite extra add-ins like chopped nuts (walnuts, pecans, peanuts), raisins, dried cranberries, or more M&M’s and chocolate chips for an extra indulgent batch.

Simple Steps to Bake Healthy Flourless Peanut Butter Monster Cookies
Creating these delightful cookies is a straightforward process, perfect for bakers of all skill levels. Follow these easy steps to bring a batch of healthy indulgence to life:
- Prepare Your Oven: Begin by preheating your oven to 350°F (175°C). Line a baking sheet with parchment paper to prevent sticking and ensure even baking.
- Cream Wet Ingredients: In a large mixing bowl, combine the peanut butter, softened butter (or applesauce), and brown sugar. Cream these ingredients together until the mixture is well blended and smooth. Next, beat in the eggs and vanilla extract until fully incorporated.
- Combine Dry Ingredients: Add the baking soda, baking powder, oats, and salt to the wet mixture. Mix everything until just combined. The dough will have a slightly runny consistency at this stage, which is perfectly normal for flourless cookie dough.
- Fold in Your Favorite Mix-ins: Gently stir in your chocolate chips, M&M’s, and any other desired add-ins. Be careful not to overmix; just ensure the mix-ins are evenly distributed throughout the dough.
- Scoop and Shape Cookies: For perfectly portioned cookies, use a large cookie scoop (a ¼ cup scoop is ideal for jumbo cookies). Alternatively, drop heaping tablespoonfuls of dough onto your prepared baking sheet, leaving ample space between each cookie. Aim for about 6 large cookies per baking sheet.
- Bake to Perfection: Bake the cookies for 12-14 minutes, or until their edges are lightly browned and set. The centers may still appear slightly soft, but they will firm up as they cool.
- Cool and Enjoy: Once baked, remove the baking sheet from the oven and let the cookies sit on the sheet for about 5 minutes. This crucial step allows them to set properly before transferring. Use a spatula to carefully move the warm cookies to a wire rack to cool completely.
- Store for Freshness: Once cooled, store your delicious flourless monster cookies in an airtight container to maintain their freshness.
These healthy flourless monster cookies are also excellent for freezing, making them a fantastic make-ahead treat!

Tips for Storing and Freezing Your Monster Cookies
To ensure your homemade flourless monster cookies stay fresh and delicious for as long as possible, proper storage is key. Here’s how to keep them perfectly:
- Room Temperature Storage: Once your cookies have completely cooled, transfer them to an airtight container. They will remain fresh and delightful at room temperature for 1-2 days.
- Refrigeration: For extended freshness, you can also store the cookies in the refrigerator. Placed in an airtight container, they should last for up to a week.
- Freezing for Long-Term Enjoyment: These cookies freeze beautifully! Ensure they are entirely cooled before freezing. Place them in a single layer in a freezer-safe bag or an airtight container lined with wax or parchment paper to prevent them from sticking together. You can keep them in the freezer for up to 2 months.
- Thawing Instructions: When you’re ready to enjoy a frozen cookie, simply let it thaw out at room temperature for a little while. They’ll return to their delicious, chewy state, ready to be devoured!

Achieving Your Perfect Cookie Size and Texture
While our recipe is designed for hearty, jumbo-sized flourless monster cookies (using a 1/4 cup scoop), the beauty of homemade treats is that you can customize them to your heart’s content. The size you choose will primarily affect the baking time, so here’s a quick guide to help you achieve your desired results:
- Jumbo Cookies (1/4 cup scoop): These large, satisfying cookies typically bake for 12-14 minutes. They offer a substantial bite and are perfect for a truly indulgent treat.
- Medium Cookies (2-3 tablespoon scoop): For a more moderately sized cookie, use a smaller scoop. These will generally require 10-12 minutes in the oven.
- Smaller Cookies (1 tablespoon scoop): If you prefer bite-sized or mini monster cookies, a standard tablespoon works well. Reduce the baking time to 8-10 minutes.
Always keep an eye on your cookies during the last few minutes of baking, as oven temperatures can vary. Look for golden-brown edges as a sign of readiness. No matter the size, serve these warm from the oven with a big glass of milk for the ultimate classic cookie experience!
Creative Variations & Expert Baking Tips
Part of the joy of baking is experimenting and making recipes your own. These healthy flourless monster cookies are incredibly versatile, offering endless possibilities for customization. Here are some ideas and tips to inspire your next batch:
- Beyond Chocolate Chips: While semisweet chocolate chips are a staple, don’t hesitate to explore other chip options. Butterscotch chips add a rich, caramel-like sweetness, white chocolate chips offer a creamy contrast, and dark chocolate chips provide a deeper, more intense cocoa flavor. For an extra nutty kick, try peanut butter chips!
- Amp Up the Candy Fun: M&M’s bring color and crunch, but mini M&M’s create a more even distribution of candy in each bite. Consider other small, colorful candies or chopped peanut butter cups for an even more “monster” feel.
- Chewy Delights: Incorporate dried fruits for natural sweetness and a lovely chewy texture. Raisins are a classic choice, but dried cranberries, chopped apricots, or even dried cherries can add a delightful twist and extra nutrients.
- Nutty & Healthy Crunch: If you love a bit of crunch and added health benefits, stir in chopped nuts like pistachios, walnuts, pecans, or almonds. For an unexpected texture, a handful of chia seeds or rice krispies can add a subtle, healthy crunch to your cookie dough.
- Mastering the Oats: The type of oats you use significantly impacts texture.
- Quick Oats: Ideal for a softer, more uniform texture that blends seamlessly into the cookie.
- Old-Fashioned Oats: Perfect for those who prefer a chewier, more substantial cookie with visible oat flakes.
- Mix and Match: A combination of quick and old-fashioned oats offers a balance of both textures.
For certified gluten-free monster cookies, simply ensure you use gluten-free quick or old-fashioned oats. It’s an easy and effective swap!
- Healthier Substitutions: Our recipe already includes options like applesauce for butter, which reduces fat content without sacrificing moisture. You can also explore natural sweeteners like maple syrup (adjusting dry ingredients slightly for consistency) or reduce the amount of brown sugar. Using natural or sugar-free peanut butter is another excellent way to boost the health factor.
- Don’t Overload the Dough: While it’s tempting to add an abundance of mix-ins, be mindful not to overcrowd your cookie dough. Too many additions can alter the cookie’s texture, preventing them from holding their shape or baking evenly. A total of 1.5 to 2 cups of mix-ins (chocolate chips, M&Ms, and additional add-ins combined) is generally a good guideline.
- Chill the Dough: If your dough seems too soft or sticky, a brief chill in the refrigerator (30 minutes) can make it easier to handle and help prevent the cookies from spreading too much during baking.

The Irresistible Appeal of Flourless Monster Cookies
These Flourless Peanut Butter Monster Cookies are truly a delicious and nutritious treat that everyone can enjoy. They offer the perfect balance of sweet and savory, with a wonderfully chewy and moist texture that makes them incredibly satisfying. Baking a batch of these guilt-free cookies for yourself and your loved ones is sure to make them an irresistible staple in your home.
With so many good things going on – from their rich flavor and satisfying chewiness to their wholesome ingredients and fiber-rich oats – you won’t be able to resist how moist and thick they are. The best part? Seconds (and even thirds!) are absolutely permitted. They’re not just great for snacking; they also provide a good source of fiber and protein, making them a super yummy and energizing option.
Enjoy baking, sharing, and savoring these incredible cookies. Don’t forget to share your creations on Pinterest, Instagram, and Facebook!
Let’s get baking some delightful gluten-free monster cookies! Bake on! 🙂
Looking for More Monster-Inspired Treats?
If you’re a fan of monster cookies, you’ll love exploring these other creative and delicious monster-themed recipes:
- Best Monster Cookies
- Monster and Mummy Chocolate Covered Graham Cracker Cookies
- Monster Nutella and Peanut Butter Cookies
- Flourless Halloween Reese’s Cookie Bars
- Soft Batch Monster Cookies
Flourless Jumbo Peanut Butter Monster Cookies Recipe
Author: Kim Lange
Flourless, delicious, chewy peanut butter oatmeal monster cookies made a little healthier! You would never know there wasn’t flour in these monsters!

Average 5 from 8 votes
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Prep Time: 10 mins
Cook Time: 12 mins
Course: Dessert
Cuisine: American
Servings: 12 Monster Cookie Servings
Ingredients
- ¾ cup creamy or crunchy peanut butter (use sugar-free or natural peanut butter for a healthier option)
- ¼ cup butter or ¼ cup unsweetened applesauce, softened
- ⅔ cup packed brown sugar (or use your favorite healthy sweetener)
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 & ⅓ cups quick oats or gluten-free quick oats (Or, you can use old-fashioned oats or gluten-free old-fashioned oats. You can also use a mix of quick and old-fashioned oats, or add more oats for thicker cookies. Choose the type of oats based on how you want your cookie texture to be. For chewier – go with old-fashioned.)
- ½ teaspoon baking soda
- ½ tsp baking powder
- 1 generous pinch of salt (add ½ teaspoon if you want more salty flavor)
- ½ cup semisweet chocolate chips
- ½ cup M&M’s (or Reese’s Pieces)
- ½ cup additional add-ins like nuts, candies, raisins, etc. (I used more M&M’s and chocolate chips.)
Instructions
- Preheat oven to 350°.
- In a large bowl, cream peanut butter, butter and sugars until well blended and smooth and then beat in eggs and vanilla.
- Add in the baking soda, baking powder, oats and salt and mix together. Will be on the runny side.
- Stir in chocolate chips, M&M’s and whatever add-ins you want.
- Use a large cookie scoop for perfectly proportioned sizes – 1/4 cup scoop or drop by heaping tablespoonfuls 6 large cookies per baking sheet lining with parchment paper.
- Bake 12-14 minutes or until edges are browned. Let sit on baking sheets for 5 minutes before removing. Remove from pans with spatula to wire racks to cool. Store in airtight containers.
- These freeze well too!
Notes
For smaller cookies, reduce time to 8-10 minutes, medium cookies bake 10-12 minutes and large cookies bake 12-14 minutes.
Keywords: chocolate chip cookies, classic cookies, cookies, gluten free, healthy, M&Ms, oatmeal, oats, peanut butter
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