Thick, Chewy & Loaded with Candy – The Ultimate Spooky Fun Treat!
Get ready for the most fun Halloween cookie recipe ever! These Easy Halloween Monster Cookies are big, soft, chewy, and wildly colorful. Packed with peanut butter, oats, chocolate chips, and bright Halloween M&Ms, then topped with goofy candy eyes – they’re guaranteed to be a hit with kids and adults alike.
Halloween Monster Cookies
Perfect for Halloween parties, school treats, trick-or-treaters, or a fun baking day with the little monsters in your life. Best part? They’re super easy to make with no chilling required and ready in under 30 minutes!
Why You’ll Love These Monster Cookies
- One-bowl wonder (less cleanup!)
- Kid-approved & perfect for baking together
- Naturally colorful with Halloween M&Ms – no food coloring needed
- Chewy texture with crunchy candy bits in every bite
- Make them as spooky or silly as you want
- Freezer-friendly dough for last-minute treats
Ingredients (Makes 18–24 Large Cookies)
- ½ cup (113g) unsalted butter, softened
- ½ cup (130g) creamy peanut butter
- ½ cup (100g) granulated sugar
- ½ cup (100g) packed light brown sugar
- 1 large egg + 1 egg yolk
- 1 teaspoon vanilla extract
- 1 cup (125g) all-purpose flour
- 1 cup (80g) old-fashioned rolled oats
- 1 teaspoon baking soda
- ½ teaspoon salt
- ¾ cup semi-sweet chocolate chips
- ¾ cup Halloween-colored M&Ms (orange, black, green, purple) + extra for topping
- Candy eyes (various sizes for extra personality)
Optional: ½ cup Reese’s Pieces or chopped candy for even more monster chaos!
How to Make Easy Halloween Monster Cookies
- Preheat the Oven Preheat to 350°F (175°C). Line two baking sheets with parchment paper or silicone mats.
- Cream the Wet Ingredients In a large bowl, beat the butter, peanut butter, granulated sugar, and brown sugar together until light and fluffy (about 2 minutes).
- Add Eggs & Vanilla Mix in the egg, egg yolk, and vanilla extract until fully combined. The dough will look smooth and creamy.
- Mix in Dry Ingredients Add flour, oats, baking soda, and salt. Mix on low speed just until combined. Don’t overmix!
- Add the Candy Gently fold in the chocolate chips and Halloween M&Ms with a spatula.
Halloween Monster Eye Cookies – Don’t Sweat The Recipe
- Scoop the Dough Scoop large balls (about 3 tablespoons each) and place them 3 inches apart on the baking sheets. Press a few extra M&Ms and candy eyes on top of each cookie right before baking (they stick better this way!).
- Bake Bake for 11–13 minutes. The edges should be golden, but the centers should still look slightly underdone – they’ll continue cooking on the hot pan.
- Cool & Enjoy Let the cookies cool on the baking sheet for 5 minutes, then transfer to a wire rack. The candy eyes may look a little wobbly at first but will set as they cool.
Halloween Monster Cookies
Pro Tips for Monster Perfection
- Press the candy eyes and extra M&Ms on right before baking so they stay front and center.
- For extra-large bakery-style cookies, make bigger scoops and bake 1-2 minutes longer.
- Want them extra chewy? Slightly underbake them.
- No peanut butter? Swap with sunflower seed butter for allergy-friendly monsters.
- Make them gluten-free by using certified GF oats and 1:1 gluten-free flour blend.
Fun Monster Variations
- One-Eyed Monsters – Use just one big candy eye per cookie
- Hairy Monsters – Add pretzel sticks as “hair”
- Frankenstein Cookies – Use green M&Ms and black decorating icing for hair and mouth
- Mummy Monsters – Drizzle with white chocolate after baking
Storage & Make-Ahead Tips
These cookies are best eaten the day they’re baked, but they stay soft and delicious in an airtight container for up to 4 days. You can also freeze the baked cookies or the unbaked dough balls for up to 2 months. Just bake straight from frozen and add 1-2 extra minutes!
Who’s baking these with their little goblins this Halloween? These are always such a hit!
Save this recipe, pin it for later, and tag a friend who needs some monster fun in their kitchen!
