Amazing 1-Pan christmas cookie bars

A thick, moist slice of christmas cookie bars topped with red and green M&Ms and festive sprinkles on a white plate.
This single serving highlights the festive colors and chewy texture of our amazing christmas cookie bars.

The holidays are supposed to be joyful, right? But sometimes, between making lists and finding the perfect gift, holiday baking feels like its own marathon! I used to dread the cleanup, constantly scooping dough that needed chilling. That’s why Liam stepped in and showed me how to master the absolute best christmas cookie bars—the Ultimate Chewy Christmas Sprinkle and M&M Cookie Bars.

These are exactly what you need: one single pan, zero fancy steps, and the most satisfyingly chewy texture imaginable. Liam, being the technical wizard he is, perfected this recipe so that even when I’m exhausted, I can whip up a batch of these festive dessert bars that genuinely look professional. If you’re looking for simple but spectacular holiday sweets, you’ve found your answer!

Why These Are the Best Christmas Cookie Bars for Your Holiday Table

I promise you, Clara version or Liam version, these Ultimate Chewy christmas cookie bars are unbeatable when the holidays start ramping up. I keep coming back to them because they tick every single box for easy, stress-free holiday baking. Take a look at what makes them such a winner for our gatherings:

Chewy Holiday Bars Texture Guaranteed

This is serious business! We don’t want dry, hard cookies in bar form, right? The secret to achieving those perfect chewy holiday bars is twofold: we lean heavily on that rich brown sugar, and we pull them out of the oven just when the center looks *almost* done. Trust me, that slight underbake keeps them moist for days.

A thick, chewy slice of christmas cookie bars loaded with red and green candies and white chocolate chips.

Simple Christmas Baking: One Pan Treats Only

Seriously, I used to hate scooping dough onto trays—so messy! These are pure simple Christmas baking magic because it’s an all-in-one deal. You mix it, press it into the pan, and bake. That’s it! These one pan Christmas treats mean less cleanup and more time enjoying the season, which is exactly what we need from our christmas cookie bars.

Crowd Pleasing Christmas Bars Appearance

Let’s be honest, holiday food has to look festive! We load these up with classic red and green M&Ms and tons of bright Christmas sprinkles. They look like a party exploded in the best possible way, making them instantly the prettiest thing on the dessert table without needing any fussy frosting or piping work.

Three stacked squares of chewy christmas cookie bars topped with red, green, and white holiday M&M candies.

Gathering Ingredients for Your Christmas Cookie Bars

Okay, now that you know how amazing these christmas cookie bars are, let’s talk about what you need to grab. The best part about these easy christmas cookie bars is that they rely on stuff I already had in the pantry! Liam always checks my measuring technique, though, because he says even simple pantry items have specific rules if you want that perfect texture.

Measuring for Buttery Holiday Cookie Bars

Liam drilled this into me: it’s not just *what* you use, it’s *how* you measure it. For the base to be wonderfully rich and buttery, your butter absolutely has to be softened—not melted, just soft enough to press a finger into! Also, make sure that brown sugar is packed tightly into the measuring cup, and always use large eggs. Those details make all the difference between a decent bar and the best one on the platter!

How to Prepare Ultimate Chewy Christmas Sprinkle and M&M Cookie Bars

Alright, now for the fun part—throwing everything together! Liam reminded me that since these are christmas cookie bars, we need to prep our space perfectly first so we’re ready for that quick bake time. First things first: get that oven warmed up to 350°F (175°C). Then, line your 9×13 inch pan with parchment paper. Make sure you leave some overhang on the sides, like little handles. Seriously, this is the trick that lets you lift the entire slab out later. You won’t regret doing this step!

Mixing the Dough for Festive Dessert Bars

Time for the mixer! You need to cream that softened butter with both sugars until it’s fluffy—don’t cheat this part; it takes a good two or three minutes with the electric mixer to get that light color. Then, beat the eggs in one at a time. Next, mix your dry stuff (flour, baking soda, salt) separately, and slowly add those dry bits into the wet. Stop mixing the second it comes together! The absolute key to these festive dessert bars is *not* overmixing the dough once the flour is in. Finally, gently fold in those M&Ms, white chocolate chips, and most of your sprinkles. We want the flavor, not gluten development!

Baking and Cooling Your Christmas Cookie Bars

Press that beautiful, colorful dough evenly into your prepared pan—use your hands or a spatula—and sprinkle any reserved candy on top. Pop it into the 350°F oven for about 22 to 25 minutes. Now listen closely: for the signature chewiness in these christmas cookie bars, you want the edges set and just barely golden, but the center should look a little soft. If they look totally cooked through, they’ll be too firm! You must let them cool completely in the pan before you even *think* about slicing. If you cut them warm, they just turn into a crumbly mess. Patience here pays off big time!

Two stacked, thick christmas cookie bars loaded with red and green M&Ms and festive sprinkles.

Tips for Perfect Christmas Cookie Bars Every Time

Even though these christmas cookie bars are so easy, Liam always has a few extra pointers to make sure they turn out exactly right. These aren’t just random suggestions; these are the little secrets he picked up making sure my beginner attempts (Clara’s attempts!) became perfect, reliable recipes. It’s all about those small tweaks that elevate something simple into something truly special.

Achieving Maximum Chewiness in Holiday Bars

If you take nothing else away from this, remember the rule for chewy texture: don’t overbake! When you think they are done, give them five more minutes of *not* being in the oven. Honestly, the residual heat does most of the work while they cool. Also, stick to the dark brown sugar measurement—that molasses content is crucial for that soft, moist bite you want in these chewy holiday bars. It just beats white sugar every time!

Fun Variations for M and M Cookie Bars Christmas

These bars are fantastic because they are so adaptable! The recipe calls for our favorite mix of M&Ms and white chips, but you certainly don’t have to stick only to that. If you want to experiment with your m and m cookie bars christmas, feel free to swap out the chocolate chips. I’ve used peanut butter chips for an extra richness boost, or even tried mini peanut butter cups when I had them hiding in the pantry. Just make sure whatever you swap in is roughly the same volume, and you’re good to go!

A stack of three thick christmas cookie bars loaded with red and green candies, dusted with powdered sugar.

Storage and Make Ahead Holiday Bars Instructions

This is one of my favorite parts about these christmas cookie bars—they are totally wonderful for pre-holiday prep! They fall perfectly into the category of make ahead holiday bars. Since we deliberately didn’t overbake them, they stay soft and chewy for days. You just need an airtight container, and they’ll last great at room temperature for up to four days. Liam says you don’t even need to worry about special storage and reheating instructions, which is such a win when the fridge is full of leftovers!

Frequently Asked Questions About Christmas Bar Recipes

I get so many questions about these christmas cookie bars after people try them, which tells me they are definitely a hit! Most people want to know how to make them easier or how to tweak the texture, which I totally get. Liam and I put our heads together to answer the ones we hear most often when people are trying to nail that perfect, simple holiday treat.

Can I skip the white chocolate chips in these christmas cookie bars?

You absolutely can skip them if you need to, or if you just aren’t a white chocolate fan! But I have to warn you—we add those chips specifically to boost the luxurious, **buttery holiday cookie bars** feel. Without them, the bars will still taste amazing because of the butter and brown sugar base, but they will be slightly less rich and definitely less decadent looking.

What is the best way to get clean cuts on these festive dessert bars?

This is the secret to making your festive dessert bars look like bakery squares! You absolutely must let them cool completely. I mean it, let them sit until they are stone cold. Then, take a long, sharp knife and dip it briefly in hot water and wipe it dry. Slice the bar, then dip and wipe again between every single cut. It sounds fussy, but it prevents that sticky tearing, and you get beautiful, clean edges!

Are these considered holiday blondie bars?

Oh, that’s a great question! Yes, I absolutely consider these holiday blondie bars by nature. A traditional blondie uses brown sugar and vanilla for its base flavor, but skips the cocoa powder of a brownie. Since these bars have that rich, dense, chewy cookie base packed with candies, they definitely fall right into that delicious blondie category. They are our favorite version of **christmas cookie bars**!

Estimated Nutritional Snapshot for These Christmas Cookie Bars

Okay, so while these christmas cookie bars are pure indulgence and definitely more dessert than diet food, Liam always appreciates knowing the facts! I pulled all this information right off the recipe card. Remember, since we are dealing with a recipe made from scratch using real ingredients, these numbers are a really good estimate based on standard measurements, but your exact values might shift a tiny bit depending on exactly what brand of M&Ms you use or how packed your brown sugar was.

  • Serving Size: 1 bar
  • Calories: 210
  • Sugar: 18g
  • Sodium: 95mg
  • Fat: 11g
  • Saturated Fat: 6g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 27g
  • Fiber: 0.5g
  • Protein: 2g
  • Cholesterol: 35mg

It’s just good practice to know what you’re serving up, even if the only goal is holiday happiness!

Share Your Family Favorite Christmas Bars

I really hope you give these Ultimate Chewy Christmas Sprinkle and M&M Cookie Bars a try! Baking should always connect us, right? Once you’ve made them, please head down to the comments and let us know how they turned out for you. We absolutely love seeing your pictures and hearing about your family favorite Christmas bars. Did you discover a new favorite mix-in? Happy baking, and come back soon to see what Liam and I cooked up next!

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Ultimate Chewy Christmas Sprinkle and M&M Cookie Bars

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Make these easy, one-pan Christmas cookie bars loaded with festive M&Ms and sprinkles. They are perfectly chewy and simple for any holiday gathering.

  • Author: Ahazzam
  • Prep Time: 15 min
  • Cook Time: 25 min
  • Total Time: 40 min
  • Yield: 24 servings
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 1 cup unsalted butter, softened
  • 1 cup packed light brown sugar
  • 1/2 cup granulated sugar
  • 2 large eggs
  • 1 tablespoon vanilla extract
  • 2 3/4 cups all-purpose flour
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup holiday M&Ms (red and green)
  • 1/2 cup white chocolate chips
  • 1/2 cup festive Christmas sprinkles

Instructions

  1. Preheat your oven to 350°F (175°C). Line a 9×13 inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
  2. In a large bowl, cream together the softened butter, brown sugar, and granulated sugar until the mixture is light and fluffy. This takes about 2 to 3 minutes with an electric mixer.
  3. Beat in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
  4. In a separate medium bowl, whisk together the flour, baking soda, and salt.
  5. Gradually add the dry ingredients to the wet ingredients, mixing on low speed until just combined. Do not overmix the dough.
  6. Gently fold in the holiday M&Ms, white chocolate chips, and most of the festive sprinkles, reserving a small amount for the top.
  7. Press the cookie dough evenly into the prepared 9×13 inch pan. Sprinkle the reserved sprinkles over the top.
  8. Bake for 22 to 25 minutes, or until the edges are lightly golden brown and the center is set. For chewy bars, slightly underbake.
  9. Let the bars cool completely in the pan on a wire rack before lifting them out using the parchment paper overhang.
  10. Once cool, slice into squares. These are great for make ahead holiday bars.

Notes

  • For the chewiest texture, use light brown sugar and make sure you do not overbake the bars.
  • You can substitute the M&Ms with any holiday candy or mix-ins you prefer for colorful Christmas treats.
  • These bars store well in an airtight container at room temperature for up to 4 days.
  • This recipe is a fantastic example of simple Christmas baking that yields crowd pleasing Christmas bars.

Nutrition

  • Serving Size: 1 bar
  • Calories: 210
  • Sugar: 18
  • Sodium: 95
  • Fat: 11
  • Saturated Fat: 6
  • Unsaturated Fat: 5
  • Trans Fat: 0
  • Carbohydrates: 27
  • Fiber: 0.5
  • Protein: 2
  • Cholesterol: 35

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