Name: Crumbl Monster Cookie Recipe
Prep time: 20 min
Cook time: 15 min
Total time: 47 min
Cuisine: American
Ingredients: 1/2 cup butter salted or unsalted, softened; 1/3 cup brown sugar, packed; 3 tbsp granulated sugar; 1 egg; 2 tsp vanilla extract; 1 1/2 cup all purpose flour; 1/2 tsp baking soda; 1/3 tsp salt; 1/4 cup M&M’s; 1/4 cup peanut butter chips; 3 tbsp semi sweet chocolate chips

Jump to Recipe· 4.5 from 9 reviews

If you’re on the hunt for a soft, chewy cookie loaded with all the best mix-ins you can imagine, then you’ve hit the jackpot with this Crumbl Monster Cookie Recipe. Trust me, once you try these beauties, they’ll quickly become your go-to for every sweet craving because they’re just that ridiculously good. Sticky peanut butter chips, vibrant M&M’s, and melty chocolate all wrapped up in a buttery dough—what’s not to love? Keep reading and I’ll walk you through every step so you nail them perfectly every time.

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Why This Recipe Works

Balanced Sweetness: Combining brown and granulated sugars gives the cookie just the right depth of sweetness and moisture for that chewy texture.
Mix-In Variety: M&M’s, peanut butter chips, and chocolate chips create a flavor explosion and keep every bite exciting.
Gentle Mixing: Light folding of the chips preserves their shape so you get nice colorful pockets of goodness throughout.
Proper Cooling: Letting the cookies rest on the baking sheet sets them perfectly without overbaking or drying out.

Crumbl Monster Cookie, monster cookie recipe, chewy cookie with mix-ins, homemade monster cookies, best cookie with M&Ms and peanut butter chips - A light golden cookie with a soft texture is shown close up on a white marbled surface. The cookie is studded with colorful candy-coated chocolates in red, green, yellow, and orange, along with smooth, creamy peanut pieces and dark chocolate chips spread evenly throughout. The cookie has a slightly round shape with a slight uneven edge, and the top layer shows all the different candy and nut colors contrasting with the light cookie dough. Several more colorful candies are scattered loosely around the cookie on the white marbled background. photo taken with an iphone --ar 2:3 --v 7

Ingredients & Why They Work

Every ingredient here plays a crucial role in making this Crumbl Monster Cookie Recipe a superstar. From the butter to the sweet chips, it’s the combination that hits that perfect chewy-crisp balance you’re craving. I always recommend using good quality ingredients because you can really taste the difference.

Crumbl Monster Cookie, monster cookie recipe, chewy cookie with mix-ins, homemade monster cookies, best cookie with M&Ms and peanut butter chips - Flat lay of soft butter with a creamy pale yellow texture, packed light brown sugar crystals, white granulated sugar sparkling gently, a fresh whole egg with a smooth brown shell, vibrant red, green, yellow, and blue M&M's scattered naturally, creamy peanut butter chips in a soft beige tone, and rich semi-sweet chocolate chips with a deep glossy brown finish, all beautifully arranged in a casual yet balanced manner, placed on white marbled surface, photo taken with an iphone --ar 2:3 --v 7

Butter: Using softened butter (salted or unsalted) adds richness and helps the cookies stay tender. I like salted for a slight contrast to the sweet, but unsalted works too.
Brown Sugar: Adds moisture and a subtle caramel flavor that makes the cookie chewy.
Granulated Sugar: Gives a bit of crispness on the edges and helps balance the sweetness.
Egg: Binds everything together while contributing to the cookie’s soft texture.
Vanilla Extract: Essential for bringing out the flavors and adding warmth.
All-Purpose Flour: The foundation of the cookie—just the right amount to keep it soft but not cakey.
Baking Soda: Gives the cookie a gentle rise without puffing it up too much.
Salt: Enhances all the sweet flavors and balances the richness.
M&M’s: For vibrant color and fun crunch; they hold their shape nicely when baked.
Peanut Butter Chips: Adds creamy pockets of peanut butter goodness that melt in your mouth.
Semi-Sweet Chocolate Chips: Classic chocolate that complements the other mix-ins beautifully.

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Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Tweak to Your Taste

I love playing around with this Crumbl Monster Cookie Recipe because it’s so flexible. Sometimes I swap out the peanut butter chips for white chocolate or toss in some chopped nuts for crunch. You can really make this recipe your own to suit whatever mood you’re in!

Variation: Once I tried using butterscotch chips instead of peanut butter chips, and wow—such a lovely twist that added a caramel-like sweetness to every bite.
Dietary Mod: For a gluten-free version, substituting all-purpose flour with a 1:1 gluten-free baking flour mix works great without losing texture.
Seasonal Twist: Adding mini candy canes or peppermint chips during the holidays gives it a festive crunch.

Step-by-Step: How I Make Crumbl Monster Cookie Recipe

Step 1: Prep and Cream Butter and Sugars

First up, preheat your oven to 325°F and line a baking sheet with parchment paper—this ensures your cookies won’t stick and makes cleanup so much easier. Then, in a large bowl or stand mixer, cream together the cold butter with the granulated and brown sugars. When I do this, I look for a light, fluffy texture—not too melted, just soft and creamy. This usually takes about 3-4 minutes and is key to that melt-in-your-mouth feel.

Step 2: Add Egg and Vanilla

Next, crack in the egg and pour in your vanilla extract. Mix just until combined—no overmixing here. The batter will look rich and fragrant. This step might seem small, but vanilla really boosts the overall cookie flavor.

Step 3: Add Dry Ingredients

Sift your flour, baking soda, and salt together, then gently fold them into your wet ingredients. Be careful not to overwork the dough at this point—you want the flour just incorporated. This stops the cookies from turning tough later on. Your dough will seem thick but soft, perfect for scooping.

Step 4: Fold in the Mix-Ins

Now for the fun part—fold in your M&M’s, peanut butter chips, and semi-sweet chocolate chips. I always fold gently to keep the chips intact and colorful in the final cookie. You’ll see little pops of color right through the dough, which tells you you’re on the right track.

Step 5: Scoop, Flatten, and Bake

Using a large cookie scooper (about 2 tablespoons worth), scoop out 8 equal-sized balls onto your prepared baking sheet. Then, gently press each ball down to about 1 inch thick. This helps them bake evenly and get that perfect thick, chewy texture. Bake for 12-13 minutes—you’re aiming for edges that are set but still soft centers.

Step 6: Top and Cool

The moment the cookies come out of the oven, quickly top each with a few extra chocolate chips, peanut butter chips, and M&M’s. I love this little trick—it amps up the look and adds fresh gooey pockets on top. Let them cool right on the baking sheet for about 20 minutes to fully set. This resting period makes a huge difference and stops the cookies from being doughy or crumbly.

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Pro Tips for Making Crumbl Monster Cookie Recipe

Use Cold Butter: Starting with cold butter and creaming it well creates a light texture instead of greasy, flat cookies.
Don’t Overmix Flour: Mixing just until the flour disappears keeps your cookies tender and chewy.
Press Cookies Before Baking: Flattening the dough balls helps them bake evenly and prevents overly thick centers.
Cool on Baking Sheet: Let the cookies cool fully on the sheet to avoid breaking apart and to lock in softness.

How to Serve Crumbl Monster Cookie Recipe

Garnishes

I keep it simple and fun by topping the fresh-out-of-the-oven monster cookies with extra chocolate and peanut butter chips. It gives the cookies that irresistible melty, glossy look and just a little extra sweetness on top. Sometimes, I even sprinkle a tiny pinch of flaky sea salt for a surprising salty-sweet kick that drives everyone wild.

Side Dishes

Milk is the classic sidekick here, and I always have a cold glass ready. For adults, a scoop of vanilla ice cream pairs beautifully, turning them into an indulgent dessert. If you’re serving for a crowd, little bowls of fresh fruit or nuts balance out the richness nicely.

Creative Ways to Present

For birthday parties, I arranged these monster cookies on a colorful platter, layering them with festive cupcake liners for easy grab-and-go fun. Another time, I stacked them like mini cookie sandwiches with peanut butter cream filling. Either way, they always steal the show and get eaten in seconds!

Make Ahead and Storage

Storing Leftovers

I usually store leftover monster cookies in an airtight container at room temperature for up to 4 days, but honestly, fridge storage is my favorite because it keeps them soft longer. When refrigerated, they last about a week without drying out, making it easy to enjoy a cookie any time without baking fresh.

Freezing

Freezing works beautifully too! I freeze the cooled cookies in a single layer on a tray first, then transfer them to a ziplock bag. They freeze well for up to 3 months. When you want one, just thaw at room temp or microwave for 10 seconds for that fresh-baked feel.

Reheating

To bring back that freshly baked warmth, I pop a cookie in the microwave for about 10-15 seconds. The chips soften and the cookie gets that chewy, gooey revival everyone loves. Just be careful not to overheat or it’ll turn dry and crumbly.

FAQs

Can I use salted butter in this Crumbl Monster Cookie Recipe?

Absolutely! Using salted butter adds a lovely hint of saltiness that can enhance the sweetness of the cookie. If you use salted butter, you might want to reduce the added salt a bit to avoid it getting too salty.
Why do you press the cookie dough before baking?

Pressing the dough down to about an inch thickness helps the cookies bake evenly and develops that perfect thick yet chewy texture that’s so iconic in this recipe. Without it, cookies may come out too puffy or underbaked in the center.
Can I substitute ingredients for allergies?

Yes! For nut allergies, just swap peanut butter chips with more chocolate chips or white chocolate chips. For gluten sensitivities, use your favorite gluten-free flour blend. The key is to keep mix-in ratios similar for texture balance.
How do I keep the cookies soft longer?

Storing cookies in an airtight container in the fridge helps maintain their softness up to a week. Also, adding a slice of bread to the container helps keep moisture in, preventing them from drying out.

Final Thoughts

This Crumbl Monster Cookie Recipe feels like a warm hug in cookie form. I love sharing it because it’s simple to make but always impresses with its rich flavors and chewy, soft texture. Whether it’s a special occasion or just a regular Tuesday afternoon craving, these cookies never disappoint. Give them a try—I promise, once you do, they’ll be flying out of your kitchen just like they do in mine!