The Ultimate Mix Cookie

There’s an undeniable magic to a perfectly baked cookie – that ideal blend of soft chewiness and irresistible flavor. These Monster Cookies aren’t just any cookies; they are the ultimate expression of this magic, delivering a delightful explosion of taste and texture in every bite. Imagine a rich, chewy peanut butter oatmeal cookie, generously studded with vibrant M&M’s and abundant chocolate chips. This classic, easy-to-make treat is a guaranteed crowd-pleaser, making it perfect for lively parties, satisfying after-school snacks, or any special occasion that calls for a touch of sweet joy.

Loved by both children and adults alike, these cookies stand out as a beloved American classic. They seamlessly combine the hearty goodness of oats, the comforting richness of peanut butter, and the sheer indulgence of two kinds of chocolate. Serve them proudly alongside other popular desserts like Black Forest Cupcakes, S’mores Cookies, Funfetti Cookies, or Brownie Cookies to create an unforgettable dessert spread that caters to every sweet craving.

As a devoted cookie enthusiast, I can confidently say that these Monster Cookies are a true revelation. They encapsulate all my favorite cookie elements into one handheld masterpiece. Many monster cookie recipes can result in a dry or overly hard texture, but this perfected version consistently yields cookies that are wonderfully soft and incredibly chewy, batch after batch. The secret lies in a carefully balanced ratio of ingredients and precise baking techniques that ensure a delightful mouthfeel every single time. Get ready to discover your new favorite cookie recipe!

Why You’ll Love These Monster Cookies

Monster cookies are more than just a dessert; they’re a celebration of texture and flavor that appeals to everyone. What makes them truly special is the harmonious blend of diverse ingredients that create a uniquely satisfying experience. The creamy peanut butter provides a rich, savory depth that perfectly complements the sweetness of the sugars. Hearty rolled oats introduce a delightful chewiness, making each cookie wonderfully substantial. Then, you have the double dose of chocolate: classic semi-sweet chocolate chips that melt into gooey pockets, and colorful M&M’s that add a satisfying crunch and a playful visual appeal. The combination is simply irresistible – a soft, chewy, peanut buttery, chocolatey, and oat-filled treat that’s impossible to resist. This recipe ensures that your cookies will consistently turn out soft, never dry or crumbly, offering that perfect melt-in-your-mouth quality that makes them a true monster hit!

Monster Cookies Ingredients

Crafting these extraordinary Monster Cookies requires a selection of common pantry staples that, when combined, create something truly magical. Each ingredient plays a vital role in achieving that signature soft, chewy, and loaded texture:

• Butter (softened): The foundation of any great cookie, softened butter provides richness and helps create that desirable light and fluffy texture when creamed with sugars.
• Brown Sugar: Essential for moisture and chewiness. Brown sugar also imparts a deeper, molasses-rich flavor that enhances the overall taste profile.
• Granulated Sugar: Contributes to the cookie’s crisp edges and helps balance the sweetness and texture with the brown sugar.
• Large Egg: Acts as a binder, providing structure and moisture, ensuring your cookies hold together and remain tender.
• Peanut Butter: The star flavor! I typically use creamy peanut butter for a smoother texture, but crunchy peanut butter can be used for added nuttiness and texture. Choose a good quality, shelf-stable brand for best results.
• Vanilla Extract: A crucial flavor enhancer that brings out the best in all the other ingredients, adding warmth and depth to the cookies.
• All-Purpose Flour: Provides the necessary structure for the cookies. Ensure it’s measured correctly to avoid a dense or overly crumbly texture.
• Baking Soda: Our leavening agent, which helps the cookies rise slightly and contributes to their soft, chewy texture.
• Rolled Oats (Old Fashioned Oats): The secret to that wonderful, hearty chew. Rolled oats maintain their shape and provide a satisfying texture, distinguishing monster cookies from other varieties.
• M&M Candies: These add vibrant color, a delightful candy shell crunch, and extra bursts of chocolatey sweetness. Don’t forget a few extra for pressing onto the tops!
• Semisweet Chocolate Chips: For classic, melty chocolate goodness. The semisweet variety offers a perfect balance that prevents the cookies from being overly sweet. Have some extra on hand for garnish.

How Do You Make Monster Cookies?

Making these monster cookies is a straightforward process, perfect for bakers of all experience levels. Follow these simple steps to create your batch of irresistible treats:

1. Prepare Your Workspace: Begin by preheating your oven to 350°F (175°C). Line a large cookie sheet with parchment paper or a nonstick silicone baking mat. This prevents sticking and ensures even baking.
2. Cream Butter and Sugars: In the bowl of a stand mixer fitted with the paddle attachment (or using a hand mixer), combine the softened butter, brown sugar, and granulated sugar. Beat on medium speed for 1-2 minutes until the mixture is light, fluffy, and well combined. This step incorporates air, contributing to the cookies’ soft texture.
3. Add Wet Ingredients: Next, add the large egg, peanut butter, and vanilla extract to the creamed butter mixture. Mix again on medium speed until all ingredients are thoroughly combined and smooth, scraping down the sides of the bowl as needed.
4. Incorporate Dry Ingredients: Gradually add the all-purpose flour and baking soda to the wet mixture. Mix on low speed until the dry ingredients are just incorporated. Be careful not to overmix, as this can lead to tough cookies. Once combined, gently stir in the rolled oats until evenly distributed throughout the dough.
5. Fold in the Fun: Finally, add the M&M’s and semisweet chocolate chips to the dough. Using a spatula or a spoon, gently fold them into the mixture. The goal is to distribute them evenly without crushing the candies or overworking the dough.
6. Scoop and Shape: Using a 2-tablespoon sized cookie scoop (or just two spoons), form uniform balls of dough. Place them about 2 inches apart on your prepared baking sheet. Remember that you will likely need to bake these cookies in batches.
7. The Signature Look: For that classic Monster Cookie appeal, gently press a few extra M&M’s and chocolate chips onto the tops of each cookie dough ball before baking. This makes them look even more appealing once baked.
8. Bake to Perfection: Transfer the baking sheet to the preheated oven and bake for 11-13 minutes. Look for edges that are lightly golden brown. The centers may still look slightly soft, but they will set as they cool. Avoid overbaking, as this is key to maintaining their soft and chewy texture.
9. Cool and Enjoy: Once baked, remove the cookies from the oven and let them cool on the baking sheet for about 5 minutes. This allows them to firm up slightly. Then, carefully transfer them to a wire cooling rack to cool completely. Repeat the process with any remaining cookie dough. Once cooled, serve and revel in the deliciousness!

Tips For The Perfect Cookies

• Uniformity is Key: To ensure all your Monster Cookies bake evenly and look professional, use a cookie scoop or a standard tablespoon measure. Consistent sizing prevents some cookies from burning while others are still underbaked.
• Plan Ahead with Dough Chilling: The cookie dough can be made ahead of time and stored in the fridge for up to 3 days. If you’re chilling the dough for an extended period, consider omitting the M&M’s until just before baking. This prevents the colors from the candies from potentially bleeding into and staining the dough over time. Chilling the dough also deepens flavors and can help prevent excessive spreading.
• Choose the Right Oats: This recipe truly shines with rolled oats, also known as old-fashioned oats. Their larger, thicker flakes provide the signature chewy texture. While you can use quick oats if that’s all you have, they will result in a slightly less chewy cookie. Avoid instant oats, as their fine texture won’t contribute to the desired chewiness.
• Master the Baking Time: The most crucial tip for soft, chewy cookies is to never overbake them! Monster cookies should only be a light golden brown around the edges when you pull them from the oven. The centers may still appear slightly soft or underbaked, but they will continue to set as they cool on the hot baking sheet. Overbaking is the quickest way to end up with hard, dry cookies.
• Quality Matters for Chocolate: For the most luxurious chocolate flavor and best melting consistency, opt for a high-quality brand of chocolate chips. Brands like Guittard or Ghirardelli are excellent choices that will elevate the taste of your cookies significantly.
• Room Temperature Ingredients: Always ensure your butter and egg are at room temperature. This allows them to cream together more smoothly with the sugars, creating a more uniform and aerated dough that bakes beautifully.
• Proper Flour Measurement: For accurate baking, measure your flour by spooning it into a measuring cup and then leveling it off with a straight edge. Scooping flour directly from the bag can compact it, leading to too much flour and dense, dry cookies.

Flavor Variations

While these Monster Cookies are absolutely delicious in their classic form, one of their greatest strengths is their adaptability. Feel free to get creative and customize the flavors to perfectly match your preferences or what you have on hand:

• Peanut Butter Alternatives: If you’re looking for a different nutty profile or need an allergy-friendly option, you can easily swap out the peanut butter. Try almond butter, cashew butter, or for a nut-free alternative, sunflower seed butter (like SunButter) works wonderfully.
• Chocolate Choices: Don’t limit yourself to just semi-sweet chocolate chips! Experiment with other varieties to alter the flavor:
  • White Chocolate Chips: For a sweeter, creamier contrast.
  • Milk Chocolate Chips: For a milder, more classic milk chocolate flavor.
  • Dark Chocolate Chips: For a richer, more intense chocolate experience.
  • Peanut Butter Chips: To double down on the peanut butter flavor.
  • Butterscotch Chips: For a warm, caramel-like note.
  • Cinnamon Chips: For a cozy, spiced twist, especially great around the holidays.
• Exciting Add-Ins: Beyond M&M’s and chocolate chips, the possibilities for extra mix-ins are endless! You can swap out some of the existing additions or add new ones to create your unique monster cookies:
  • Nuts: Chopped pecans, walnuts, or even macadamia nuts for extra crunch and richness.
  • Coconut Flakes: Shredded or flaked coconut adds a tropical sweetness and chewiness.
  • Toffee Bits: For a buttery, caramel-like crunch and flavor.
  • Pretzels: Crushed pretzels introduce a fantastic salty-sweet dynamic and an extra crispy texture.
  • Dried Fruit: Dried cranberries, raisins, or chopped dried apricots can add a tangy, chewy element.
  • Candy Bar Pieces: Roughly chopped pieces of your favorite candy bars can make these cookies even more monstrously indulgent.

It’s no wonder my kids ask for these Monster Cookies constantly – and honestly, I can’t blame them! With their irresistible soft, flavorful peanut butter oat base and generous quantities of luscious chocolate, they truly are the cookie of dreams. Whether you’re making them for a special gathering or just to brighten an ordinary day, these cookies are guaranteed to bring smiles and satisfy every sweet tooth. So go ahead, whip up a batch, and experience the joy of these incredible, loaded cookies!

4.78 from 18 votes

Monster Cookies

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Author
Sara Welch

These monster cookies are soft and chewy peanut butter oatmeal cookies loaded with chocolate chips and M&M’s. An easy and classic cookie that’s perfect for parties, after school snacks and special occasions.

Time

Prep Time

10 minutes
minutes

Cook Time

15 minutes
minutes

Total Time

25 minutes
minutes

Course
Dessert, Snack

Cuisine
American

Serves

24
servings

Ingredients

• ▢ 1/2 cup butter softened
• ▢ 3/4 cup brown sugar
• ▢ 1/4 cup granulated sugar
• ▢ 1 egg
• ▢ 1/2 cup peanut butter I prefer creamy but crunchy will also work
• ▢ 1 teaspoon vanilla extract
• ▢ 1 cup all purpose flour
• ▢ 1/2 teaspoon baking soda
• ▢ 1 1/4 cups rolled oats
• ▢ 1 cup M&M’s plus more for tops of cookies
• ▢ 1/2 cup semisweet chocolate chips plus more for tops of cookies

Instructions

• Preheat your oven to 350°F (175°C).
• Line a large baking sheet with a piece of parchment paper or a silicone baking mat to prevent sticking.
• In the bowl of a stand mixer, combine the softened butter, brown sugar, and granulated sugar. Beat on medium speed until the mixture is light and fluffy, usually 1-2 minutes.
• Add the egg, peanut butter, and vanilla extract to the bowl. Mix on medium speed until all ingredients are well combined and smooth.
• Gradually add the all-purpose flour and baking soda to the bowl. Mix on low speed until the dry ingredients are just incorporated. Then, stir in the rolled oats until evenly distributed.
• Add the M&M’s and chocolate chips to the dough. Gently fold them in using a spatula until they are evenly mixed throughout the dough.
• Scoop the cookie dough into 2-tablespoon sized balls and place them approximately 2 inches apart on the prepared baking sheet. You will likely need to bake the cookies in multiple batches.
• For an extra inviting look, gently press a few additional M&M’s and chocolate chips onto the top of each cookie dough ball before baking.
• Bake for 11-13 minutes, or until the edges of the cookies are lightly golden brown. The centers may still appear slightly soft.
• Allow the cookies to cool on the baking pan for 5 minutes after removing them from the oven. This helps them set. Then, transfer them to a wire rack to cool completely.
• Repeat the process with any remaining cookie dough. Once all cookies are completely cooled, they are ready to serve and enjoy!

Notes

1. Store any leftover cookies in a sealed, airtight container at room temperature for up to 5 days. For longer storage, you can freeze the baked cookies for up to 2 months.
2. Rolled oats are sometimes referred to as old-fashioned oats in grocery stores. They are essential for the signature chewy texture of monster cookies.

Nutrition

Calories: 159kcal | Carbohydrates: 18g | Protein: 2g | Fat: 8g | Saturated Fat: 3g | Cholesterol: 17mg | Sodium: 86mg | Potassium: 88mg | Fiber: 1g | Sugar: 10g | Vitamin A: 130IU | Calcium: 15mg | Iron: 0.8mg

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