If you’re on the hunt for a cookie that combines the perfect balance of chewy texture and delightful mix-ins, these Chewy Monster Cookies are exactly what you need. Imagine a cookie loaded with peanut butter, oats, chocolate chips, and colorful candy-coated chocolates that bring every bite to life. These cookies are not only irresistibly delicious but also simple to whip up, making them an ideal treat for any occasion — from after-school snacks to party platters.
Why This Recipe Is a Must-Try
Chewy Monster Cookies stand out because they bring together the best elements of classic cookies: the hearty chewiness from oats, the rich creaminess of peanut butter, and the sweet bursts of chocolate and candies. Unlike traditional chocolate chip cookies that can sometimes turn out cakey or crisp, these cookies maintain a soft and chewy bite every time. The monster cookie mix-ins make each cookie a fun surprise, perfect for kids and adults alike. Plus, the recipe uses straightforward pantry staples, so you can easily make them at home without any fancy ingredients.
Ingredients
- 1 cup creamy peanut butter (natural, no added sugar or salt)
- 1 cup packed light brown sugar
- 1/2 cup granulated sugar
- 2 large eggs
- 1 teaspoon pure vanilla extract
- 1 1/2 cups old-fashioned rolled oats
- 1 cup all-purpose flour
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup semisweet chocolate chips
- 1 cup colorful candy-coated chocolates (ensure they are free from gelatin or any animal-derived ingredients)
How To Make Chewy Monster Cookies
Step 1: Preheat and Prepare
Begin by preheating 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 Peanut Butter and Sugars
In a large mixing bowl, combine the peanut butter, light brown sugar, and granulated sugar. Using a hand mixer or stand mixer, beat on medium speed until the mixture is smooth and creamy, about 2-3 minutes.
Step 3: Add Eggs and Vanilla
Add the eggs one at a time, beating well after each addition. Then, mix in the vanilla extract. This will create a smooth and glossy batter.
Step 4: Combine Dry Ingredients
In a separate bowl, whisk together the rolled oats, all-purpose flour, baking soda, and salt until evenly mixed.
Step 5: Mix Dry Ingredients into Wet Ingredients
Gradually add the dry ingredients to the wet mixture. Stir with a spatula or mix on low speed until just combined. Avoid overmixing to keep the cookies tender.
Step 6: Fold in Chocolate Chips and Candy-Coated Chocolates
Gently fold in the chocolate chips and candy-coated chocolates until they are evenly distributed throughout the dough.
Step 7: Scoop and Bake
Using a cookie scoop or tablespoon, drop rounded balls of dough onto the prepared baking sheets, spacing them about 2 inches apart. Bake in the preheated oven for 10-12 minutes, or until the edges are set but the centers remain soft.
Step 8: Cool and Enjoy
Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely. This helps them set and maintain their chewy texture.
Expert Tips
- Use natural peanut butter without added sugar to control sweetness and achieve the best flavor.
- Don’t overbake the cookies. They should look slightly underbaked in the center when you remove them from the oven to keep them chewy.
- For even mixing, fold in the chocolate chips and candies gently to avoid breaking them.
- Chilling the dough for 30 minutes before baking can help prevent the cookies from spreading too much.
- Use parchment paper or silicone mats to avoid cookies sticking to the baking sheet.
Variations and Customizations
- Nut-Free Option: Substitute the peanut butter with sunflower seed butter or a similar nut-free spread.
- Vegan Version: Replace eggs with flax eggs (1 tablespoon ground flaxseed + 3 tablespoons water per egg) and use dairy-free chocolate chips.
- Mix-in Swaps: Swap candy-coated chocolates for raisins, dried cranberries, or chopped nuts for a different texture and flavor.
- Spices: Add 1 teaspoon cinnamon or a pinch of nutmeg to the dry ingredients for a warm, spiced twist.
- White Chocolate Lover: Use white chocolate chips instead of semisweet for a creamier sweetness.
How to Store Leftovers
To keep your Chewy Monster Cookies fresh, store them in an airtight container at room temperature for up to 5 days. If you want to extend their shelf life, you can freeze the cookies — place them in a single layer on a baking sheet and freeze until solid, then transfer to a freezer-safe bag or container. Thaw at room temperature before serving. Reheating slightly in the microwave for 10-15 seconds will bring back that soft, chewy texture.
FAQ
Can I use chunky peanut butter instead of creamy?
Absolutely! Chunky peanut butter will add an extra bit of texture to your cookies, making them even more interesting with little peanut pieces throughout. Just be aware that this might affect the overall chewiness slightly.
Are these cookies gluten-free?
This recipe uses all-purpose flour, which contains gluten. To make these cookies gluten-free, substitute the flour with a gluten-free all-purpose baking blend that includes xanthan gum. Ensure your oats are certified gluten-free as well.
Can I make these cookies without candy-coated chocolates?
Yes! The candy-coated chocolates add a fun pop of color and sweetness, but you can leave them out or replace them with more chocolate chips, nuts, or dried fruit.
How do I prevent the cookies from spreading too much?
Make sure your dough is well chilled before baking, and avoid using too much butter or peanut butter that is too oily. Also, spacing the cookie dough balls properly and baking at the right temperature helps maintain their shape.
Conclusion
Chewy Monster Cookies are a delightful treat that combines classic flavors and textures into one fun, satisfying bite. Whether you’re baking for your family, friends, or just yourself, this recipe promises consistent results with a perfect chewy texture and delightful mix-ins. The best part? It’s easy to customize based on your preferences or dietary needs. So grab your mixing bowl and get ready to bake a batch of these delicious cookies — your taste buds will thank you!

Chewy Monster Cookies
Ingredients
- 1 cup creamy peanut butter natural, no added sugar or salt
- 1 cup packed light brown sugar
- 1/2 cup granulated sugar
- 2 large eggs
- 1 teaspoon pure vanilla extract
- 1 1/2 cups old-fashioned rolled oats
- 1 cup all-purpose flour
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup semisweet chocolate chips
- 1 cup colorful candy-coated chocolates ensure they are free from gelatin or any animal-derived ingredients
Instructions
- 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.
- In a large mixing bowl, combine the peanut butter, light brown sugar, and granulated sugar. Using a hand mixer or stand mixer, beat on medium speed until the mixture is smooth and creamy, about 2-3 minutes.
- Add the eggs one at a time, beating well after each addition. Then, mix in the vanilla extract to create a smooth and glossy batter.
- In a separate bowl, whisk together the rolled oats, all-purpose flour, baking soda, and salt until evenly mixed.
- Gradually add the dry ingredients to the wet mixture. Stir with a spatula or mix on low speed until just combined, avoiding overmixing to keep the cookies tender.
- Gently fold in the chocolate chips and candy-coated chocolates until they are evenly distributed throughout the dough.
- Using a cookie scoop or tablespoon, drop rounded balls of dough onto the prepared baking sheets, spacing them about 2 inches apart. Bake in the preheated oven for 10-12 minutes, or until the edges are set but the centers remain soft.
- Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely. This helps them set and maintain their chewy texture.
Equipment
- Oven
- Baking Sheets
- Parchment Paper
- Mixing Bowls
- Hand Mixer
- Spatula
- Wire Rack