Cake Mix Monster Cookies are a fun and easy twist on classic monster cookies, made with a boxed cake mix, peanut butter, oats, chocolate chips, and colorful candies. These soft, chewy cookies are packed with flavor and perfect for parties, bake sales, or a quick sweet treat.
Why You’ll Love This Recipe
- Quick and easy to make with a cake mix shortcut
- Soft, chewy, and loaded with mix-ins
- Perfect for customizing with your favorite candies and chocolate chips
- Great for parties, holidays, or anytime snacking
- Kid-friendly and fun to make together
Ingredients
(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)
- 1 box yellow or white cake mix (15.25 ounces)
- 1 cup old-fashioned oats
- 1/2 cup creamy peanut butter
- 1/2 cup unsalted butter, softened
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 cup chocolate chips
- 1 cup candy-coated chocolates (like M&M’s)
- 1/2 cup mini chocolate chips (optional)
Directions

- Preheat the Oven:
- Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper or silicone baking mats.
- Mix the Dough:
- In a large bowl, combine the cake mix, oats, peanut butter, butter, eggs, and vanilla extract. Mix until well combined and a thick dough forms.
- Add Mix-Ins:
- Gently fold in the chocolate chips and candy-coated chocolates until evenly distributed.
- Shape the Cookies:
- Scoop dough using a tablespoon or cookie scoop and place on the prepared baking sheets about 2 inches apart.
- Bake:
- Bake for 10-12 minutes, or until the edges are slightly golden. The centers may look a bit soft, but they will set as they cool.
- Cool and Serve:
- Allow the cookies to cool on the baking sheets for 5 minutes, then transfer to a wire rack to cool completely.
Servings and Timing
- Servings: 24-30 cookies
- Prep Time: 10 minutes
- Cook Time: 10-12 minutes
- Total Time: 20-25 minutes
Variations
- Different Cake Mix Flavors: Try using chocolate, funfetti, or spice cake mix for a twist.
- Nut-Free Option: Use sunflower seed butter instead of peanut butter and omit nuts.
- Add-Ins: Mix in raisins, coconut flakes, or chopped nuts for extra texture.
- Gluten-Free: Use a gluten-free cake mix and certified gluten-free oats.
- Holiday-Themed: Swap out the candy colors to match holidays like red and green for Christmas or pastels for Easter.
Storage/Reheating
- Room Temperature: Store in an airtight container for up to 5 days.
- Freezing: Freeze baked cookies in a freezer-safe container for up to 3 months. Thaw at room temperature before serving.
- Reheating: Warm cookies in the microwave for 10-15 seconds to revive their softness.
FAQs
1. Can I use a different type of nut butter?
Yes, almond butter or cashew butter work well, or use a nut-free alternative if needed.
2. Do I have to add oats to this recipe?
The oats add texture and help make the cookies chewy, but you can omit them if needed.
3. Can I make these cookies smaller or larger?
Yes, adjust the size of your cookie scoops and monitor the baking time accordingly.
4. How do I prevent the cookies from spreading too much?
Chill the dough for 15-30 minutes before baking to help the cookies hold their shape.
5. Can I use crunchy peanut butter instead of creamy?
Yes, crunchy peanut butter adds a bit of extra texture to the cookies.
6. What if I don’t have parchment paper?
You can use a nonstick baking sheet or lightly grease your baking sheets instead.
7. Can I make the dough ahead of time?
Yes, you can refrigerate the dough for up to 2 days or freeze it for up to 2 months.
8. Can I use mini candy-coated chocolates instead of regular-sized ones?
Yes, mini candies work great and can help ensure you get candy in every bite.
9. How do I make the cookies more festive for holidays?
Use seasonal M&M’s or sprinkle festive-colored sprinkles over the cookie dough before baking.
10. Can I substitute the butter with oil?
Butter adds flavor and helps with texture, but you can use 1/2 cup of vegetable oil as a substitute.
Conclusion
Cake Mix Monster Cookies are a quick and fun treat that combines the ease of a cake mix with the chewy goodness of monster cookies. With endless options for mix-ins and flavors, these cookies are perfect for any occasion, from school lunches to holiday cookie exchanges. Whip up a batch of these colorful, chewy cookies and watch them disappear!
PrintCake Mix Monster Cookies
Cake Mix Monster Cookies are a fun and colorful treat packed with chocolate chips, M&M’s, and oats. Using a cake mix as the base makes this recipe super easy and quick! These chewy and delicious cookies are perfect for Halloween, parties, or whenever you need a playful dessert.
- Prep Time: 10 minutes
- Cook Time: 12 minutes
- Total Time: 22 minutes
- Yield: 24 cookies 1x
- Category: Dessert, Snack
- Method: Baking
- Cuisine: American
Ingredients
- 1 box (432 g / 15.25 oz) yellow cake mix (or white cake mix)
- 1 cup old-fashioned oats
- 1/2 cup (115 g) unsalted butter, melted
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 cup M&M’s (Halloween colors or any variety)
- 1/2 cup chocolate chips (semi-sweet or milk chocolate)
- 1/2 cup peanut butter chips (optional)
- 1/2 cup mini pretzels, crushed (optional, for crunch)
Instructions
🍪 Prepare the Dough:
-
Preheat the Oven:
- Preheat your oven to 180°C (350°F).
- Line baking sheets with parchment paper or silicone baking mats.
-
Mix the Dough:
- In a large bowl, combine the cake mix, oats, melted butter, eggs, and vanilla extract.
- Mix until well combined and a thick dough forms.
-
Add Mix-Ins:
- Fold in M&M’s, chocolate chips, peanut butter chips, and crushed pretzels (if using).
- Reserve a few M&M’s and chocolate chips to press into the tops of the cookies before baking.
🍫 Shape and Bake the Cookies:
-
Portion the Dough:
- Use a cookie scoop or tablespoon to drop dough balls onto the prepared baking sheets, spacing them about 2 inches apart.
-
Add Extra Toppings:
- Press extra M&M’s and chocolate chips on top of each cookie for a festive look.
-
Bake:
- Bake for 10-12 minutes until the edges are set but the centers still look slightly soft.
- Avoid overbaking to keep the cookies chewy.
⏲️ Cool and Serve:
-
Cool the Cookies:
- Allow the cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
-
Serving Suggestions:
- These cookies are perfect on their own or with a cold glass of milk!
Notes
- Storage: Store cookies in an airtight container at room temperature for up to 5 days.
- Freezing Tip: You can freeze the cookie dough balls before baking. Just bake from frozen, adding an extra 1-2 minutes to the baking time.
- Mix-In Ideas: Try adding shredded coconut, mini marshmallows, or chopped nuts for a twist.