Christmas Monster Cookies

Christmas Monster Cookies were the happy result of a last-minute holiday baking frenzy when I wanted to make something festive that didn’t require decorating or fussing over. I threw together a mix of holiday candies oats and chocolate chips hoping for a miracle and what came out of the oven was pure magic chewy colorful and completely addictive.

What I love most about these cookies is how customizable and fun they are to make with kids or when hosting a cookie exchange. They’re packed with peanut butter oats festive red and green candies and just the right amount of chocolate making them a perfect blend of everything delicious about holiday baking without any of the stress.

Ingredients :

Here’s what I use for this recipe. You can always make substitutions if you prefer!

• Old-fashioned oats – Add chewy texture and hearty bite to every cookie
• All-purpose flour – Helps provide structure so the cookies hold their shape
• Baking soda – Gives the cookies a little lift and prevents them from being too dense
• Butter – Adds richness and keeps the cookies tender and flavorful
• Brown sugar – Brings a deep caramel flavor and keeps them soft
• Granulated sugar – Balances sweetness and gives the dough structure
• Peanut butter – Adds creaminess and that signature nutty monster cookie flavor
• Eggs – Bind the dough and add richness
• Vanilla extract – Enhances all the other flavors and brings warmth
• Red and green M&Ms – Bring that classic Christmas color and crunch
• Chocolate chips – Melt into gooey bites of chocolate throughout
• Mini pretzels or sprinkles (optional) – Add extra crunch and holiday sparkle

Tools You’ll Need

• Mixing Bowls – For combining wet and dry ingredients separately
• Electric Mixer – Helps cream the butter and sugars quickly
• Spatula – Makes folding in the mix-ins super easy
• Cookie Scoop or Spoon – Keeps cookies evenly sized
• Baking Sheet – Where the cookies bake up golden and chewy
• Parchment Paper – Prevents sticking and makes cleanup fast

Instructions

Step 1: Preheat the Oven

I always start by preheating the oven to 350°F so it’s ready when the dough is.

Step 2: Mix Dry Ingredients

In a bowl I combine flour baking soda and oats and set that aside while I get the wet ingredients ready.

Step 3: Cream Butter and Sugars

Using a mixer I beat the softened butter with brown sugar and granulated sugar until light and fluffy.

Step 4: Add Peanut Butter and Eggs

Then I mix in the peanut butter eggs and vanilla until the dough is smooth and creamy.

Step 5: Combine Wet and Dry

Next I gradually add the oat mixture to the wet ingredients mixing just until combined—don’t overmix or the cookies can get tough.

Step 6: Fold in the Fun Stuff

I gently stir in the M&Ms chocolate chips and any other holiday add-ins I want to use like crushed pretzels or sprinkles.

Step 7: Scoop and Bake

I scoop out balls of dough onto a parchment-lined baking sheet and bake for 10–12 minutes until the edges are golden but the centers are still soft.

Step 8: Cool and Decorate

After a few minutes I move the cookies to a wire rack to cool and sometimes press a few extra M&Ms on top to make them look extra festive.

Tips

Chill the dough for 30 minutes if you want thicker cookies with less spread

Don’t overbake these are best slightly soft in the middle

Swap in holiday sprinkles or white chocolate chips for variety

You can make the dough ahead and freeze it in scoops for quick holiday baking

Ways to Serve

Serve on a holiday cookie tray with hot cocoa or coffee

Wrap in clear bags and tie with ribbon for homemade edible gifts

Stack in jars or tins for festive cookie exchanges

Crumble over ice cream for a fun dessert twist

Frequently Asked Questions

What makes these Christmas Monster Cookies different from regular cookies?

They’re loaded with peanut butter oats chocolate chips and holiday M&Ms giving them a chewy colorful and festive twist perfect for Christmas.

Can I freeze Christmas Monster Cookies?

Yes both the dough and baked cookies freeze beautifully for up to 2 months.

Can I use quick oats instead of old-fashioned oats?

You can but the texture will be slightly softer old-fashioned oats give a better chewy bite.

How do I keep them soft after baking?

Store in an airtight container with a slice of bread inside to keep them from drying out.

See You in the Kitchen

I hope these Christmas Monster Cookies bring joy to your holiday baking lineup they’re easy fun and guaranteed to disappear fast! Don’t forget to share your cookie creations with me or drop your own twist in the comments.

Happy Cooking!

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