Christmas Cookie Bars

4.47 from 84 votes

These Christmas cookie bars are made with holiday colored M&Ms, white cake mix, and white chocolate chips. A fun and festive dessert to add to your holiday baking list! 

christmas cookie bars on a plate
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The holiday season means lots of fun desserts, and this recipe is one that you will want to make again and again! 

All you need is just 5 ingredients to make these simple cookie bars using a box of cake mix.

These Christmas cookie bars are very similar to my cake mix cookie bars, but made with red and green M&M’S in place of chocolate chips. 

Bake these for your family get togethers, or wrap them up as a thoughtful holiday gift. They are the perfect festive dessert that doesn’t take a lot of time to make and is always a crowd pleaser!

Christmas cookie bars

Ingredients needed

  • white cake mix
  • butter
  • eggs
  • holiday colored M&M’S
  • white chocolate chips
ingredients needed to make cake mix Christmas cookie bars

Step 1: Add the eggs to a mixing bowl and whisk them up.

Step 2: Add the white cake mix and melted butter. Beat the ingredients well with mixers until the batter is combined. 

Step 3: Add 1 cup of the Christmas colored M&M’S and the white chocolate chips to the batter, and mix again until combined. This is easiest to do with a rubber spatula by hand as the batter will be quite thick.

Step 4: Grease a 9 X 13 baking dish with cooking spray, then spread the Christmas cookie bar batter out evenly. This is easiest to do using greased hands or a rubber spatula.

Step 6: Top the cookie bar batter with additional red and green M&M’S, then bake at 350 degrees until lightly golden brown.

Once the Christmas cookie bars are done, remove them from the oven and allow to cool before cutting. 

finished baked Christmas cookie bars in the pan

Slice into pieces and watch them disappear!

Can I use another flavor of cake mix?

Yes! These would be yummy with yellow cake mix, vanilla cake mix, and chocolate cake mix too. Follow the same instructions as you would with the white cake mix.

Christmas cookie bars cut into 12 pieces

Every bite is filled with sweet white chocolate and m & m’s.

Store leftovers (if there are any!) in an airtight container at room temperature and enjoy within 2-3 days for best taste and freshness. 

These cookie bars are so good and so very simple to make, and always a hit!

I like to call them magic cookie bars, because they are so easy but really impressive for parties or gifts. If you have never made M&M’S cookie bars, this is your year!

Christmas cookie bars stacked on top of each other

Add another no fuss dessert to your holiday baking list that is a guaranteed crowd pleaser. Run to the store and grab yourself some cake mix and M&M’S and let me know what you think!

This recipe will be your go to for a fast and crowd pleasing dessert. It’s safe to say these are going to be a favorite Christmas dessert for years to come. 

Christmas cookie bars
holding a cookie bar above the serving dish
christmas cookie bars on a plate
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christmas cookie bars on a plate
4.47 from 84 votes
By: Joy Shull
These easy and festive Christmas cookie bars are made with white cake mix and holiday M&M'S.
Prep: 10 minutes
Cook: 30 minutes
Total: 40 minutes
Servings: 12

Ingredients 

  • 15 oz box of white cake mix
  • cup salted butter, melted
  • 2 eggs
  • 1 ½ cups holiday M&M’S, divided
  • cup white chocolate chips

Instructions 

  • Beat the eggs in a mixing bowl
  • Add the white cake mix and melted butter and beat to combine
  • Mix in 1 cup of the M&M'S and the white chocolate chips
  • Grease a 9 X 13 baking dish with cooking spray and use a rubber spatula to spread the cookie dough batter out evenly
  • Sprinkle the top of the batter with the remaining ½ cup of Christmas m&m's
  • Bake the cookie bars at 350 degrees for 20 – 30 minutes, until lightly golden brown and the middle is no longer wiggly
  • Allow to cool before cutting for best results
  • Store any leftover bars in an airtight container or ziploc bag and enjoy within 2-3 days

Nutrition

Calories: 345kcal, Carbohydrates: 50g, Protein: 4g, Fat: 15g, Saturated Fat: 9g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 2g, Trans Fat: 0.4g, Cholesterol: 46mg, Sodium: 319mg, Potassium: 48mg, Fiber: 1g, Sugar: 34g, Vitamin A: 257IU, Vitamin C: 0.2mg, Calcium: 123mg, Iron: 1mg
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1 Comment

  1. Don’t tell Santa we are using a cake mix for these bars. They are moist and full of flavor. I look forward to trying other cake flavors and mixings.