These delightful Monster Cookies are a whimsical blend of peanut butter, chocolate, and oats, filled with M&M’s and chocolate chips for a chewy, satisfying bite that your whole family will adore. Bake these cookies in just 20 minutes for a wonderfully nostalgic treat that will fill your kitchen with warmth and smiles.
There’s something magical about cookies that capture the spirit of playfulness and joy, and these Monster Cookies do just that. I can remember the first time I made them with my kids , they loved helping mix the ingredients and deciding just how many M&M’s to toss into the bowl! Each bite brings back memories of laughter and crumbs scattered around the kitchen. So let’s dive into this cozy cookie adventure!
PrintMonster Cookies
Delightful Monster Cookies are a whimsical blend of peanut butter, chocolate, and oats, filled with M&M’s and chocolate chips for a chewy treat.
- Prep Time: 15 minutes
- Cook Time: 10 minutes
- Total Time: 25 minutes
- Yield: 24 cookies 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
- 1/2 cup (112g) unsalted butter, room temperature
- 1/2 cup (125g) creamy peanut butter
- 3/4 cup (150g) light brown sugar, packed
- 1/4 cup (50g) granulated sugar
- 1 tsp vanilla extract
- 2 tsp molasses
- 1 large egg
- 1 tsp baking soda
- 1/2 tsp kosher salt
- 1 1/4 cup (125g) quick oats
- 1 cup (130g) all-purpose flour or 1-to-1 gluten-free baking flour
- 1 cup (185g) M&M’s
- 1 cup (185g) semisweet chocolate chips
- Flaky sea salt, for topping (optional)
Instructions
- Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.
- In a large mixing bowl, beat together the softened butter and peanut butter until creamy and smooth.
- Add the brown sugar and granulated sugar, mixing until well combined.
- Stir in the vanilla extract, molasses, and egg, mixing until fully incorporated.
- In another bowl, whisk together the baking soda, kosher salt, oats, and flour until blended.
- Gradually add the dry ingredients to the wet ingredients, mixing well.
- Fold in the M&M’s and chocolate chips until evenly distributed.
- Scoop tablespoon-sized balls of dough onto the prepared baking sheets, leaving a little space between them. If desired, sprinkle flaky sea salt on top.
- Bake for 10-12 minutes or until the edges are lightly golden but the centers are still soft. Let them cool on the baking sheets for a few minutes before transferring to a cooling rack.
Notes
Store cookies in an airtight container at room temperature for up to a week. Freeze for longer storage.
Nutrition
- Serving Size: 1 cookie
- Calories: 200
- Sugar: 15g
- Sodium: 150mg
- Fat: 10g
- Saturated Fat: 3g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 24g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 20mg
Why You’ll Love These Chewy Treats
These Monster Cookies are not just your average cookie; they’re a celebration in every bite! With a perfect balance of sweet, salty, and nutty flavors, they deliver a hearty dose of comfort without compromising on taste. Packed with wholesome oats and rich peanut butter, you’ll enjoy a snack that’s both satisfying and fun. Plus, they’re quick to whip up, making them an ideal choice for family gatherings or just a cozy night at home.
Baking Up a Storm: How to Make Monster Cookies
Ingredients:
- 1/2 cup (112g) unsalted butter, room temperature (use European-style for the best flavor!)
- 1/2 cup (125g) creamy peanut butter, like Jif or Skippy
- 3/4 cup (150g) light brown sugar, packed
- 1/4 cup (50g) granulated sugar
- 1 tsp vanilla extract
- 2 tsp molasses (for texture, not taste!)
- 1 large egg
- 1 tsp baking soda
- 1/2 tsp kosher salt
- 1 1/4 cup (125g) quick oats (use certified gluten-free if needed)
- 1 cup (130g) all-purpose flour or 1-to-1 gluten-free baking flour, spooned and leveled
- 1 cup (185g) M&M’s
- 1 cup (185g) semisweet chocolate chips
- Flaky sea salt, for topping (optional)
Directions:
- Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.
- In a large mixing bowl, beat together the softened butter and peanut butter until creamy and smooth.
- Add the brown sugar and granulated sugar, mixing until well combined.
- Stir in the vanilla extract, molasses, and egg, mixing until fully incorporated.
- In another bowl, whisk together the baking soda, kosher salt, oats, and flour until blended.
- Gradually add the dry ingredients to the wet ingredients, mixing well.
- Fold in the M&M’s and chocolate chips until evenly distributed.
- Scoop tablespoon-sized balls of dough onto the prepared baking sheets, leaving a little space between them. If you like, sprinkle a bit of flaky sea salt on top before baking.
- Bake for 10-12 minutes or until the edges are lightly golden but the centers are still soft. Let them cool on the baking sheets for a few minutes before transferring to a cooling rack.
How to Enjoy Your Monster Cookies
These cookies are perfect for sharing! Serve them warm with a glass of cold milk for a classic combination that everyone will love. You can also package them up in a cute box and give them as gifts to friends or neighbors , I promise they’ll be a hit!
Storing Your Sweet Creations
To keep your Monster Cookies fresh and delicious, store them in an airtight container at room temperature for up to a week. If you want to stash them for later, freeze them in a single layer before transferring to a freezer-safe bag or container. Simply let them thaw at room temperature when you’re ready for a treat!
Tips for Perfecting Monster Cookies
- Don’t Overmix: When combining the wet and dry ingredients, mix just until everything is incorporated to keep them chewy.
- Customize Toppings: Feel free to swap out M&M’s for other candies or nuts based on your family’s preferences.
- Chill the Dough: If you have the time, you can chill the dough for 30 minutes before baking for thicker cookies.
Fun Variations to Try
- Oreo Monster Cookies: Add crushed Oreo cookies into the dough for a double-chocolate treat!
- Nutty Additions: For extra crunch, mix in chopped walnuts or pecans along with the chocolate chips.
- Peanut Butter Swirl: For an added punch of peanut flavor, swirl in a tablespoon of crunchy peanut butter before baking.
Frequently Asked Questions
1. Can I use natural peanut butter in this recipe?
Yes, but keep in mind that natural peanut butter can be a bit runnier than store-bought brands, which might change the texture slightly.
2. How can I make these cookies gluten-free?
Simply swap the all-purpose flour for a 1-to-1 gluten-free baking flour blend, and make sure your oats are certified gluten-free.
3. Can I freeze the cookie dough?
Absolutely! You can freeze the dough before baking for up to three months. Just scoop and arrange the balls on a baking sheet, freeze until firm, then transfer to a freezer-safe container or bag. Bake them straight from the freezer, adding a couple of extra minutes to the baking time.
Baking these Monster Cookies isn’t just about filling the bellies of loved ones; it’s about creating memories and delighting in the simple joys of life. So gather your ingredients, preheat that oven, and let the fun begin!

