Christmas Oatmeal Cookie Bars

CHRISTMAS OATMEAL COOKIE BARS are thick, chewy, and loaded with red and green m&ms for a festive and easy way to have a little fun this holiday season!

Christmas Oatmeal Cookie Bars Recipe

I’ve basically turned into a cookie factory over the years.

You see, the minute our cookie jar runs empty, the husband starts mentioning that there is ‘nothing to eat in this house.’

Never mind the sliced veggies lovingly prepared for emergency snacking needs.

Or the leftovers from the homecooked meal I made the night before.

Or, let’s be real, the umpteen boxes of cereal that I keep in the pantry.

No. There is NOTHING TO EAT IN THIS HOUSE the minute we are out of cookies. ๐Ÿ˜‰

I love baking cookies (especially my perfect chocolate chip cookies!) and really do try to keep the cookie jar full, but sometimes I’m just not in the mood to scoop out dozens of cookies and deal with baking multiple pans of cookies.

Enter the bar cookie…it’s the best because you just dump all your cookie dough in a 9×13 and bake it up in one go. So easy and always a hit!

Ingredients Needed:

This is a quick run-down of the recipe with tips and tricks. For the full recipe, scroll on down to the recipe card!

  • Melted Butter
  • Brown Sugar
  • Eggs
  • Vanilla
  • Rolled Oats
  • Flour
  • Baking Soda
  • Salt
  • Holiday M&M Candies
  • Chocolate Chips
oatmeal cookie bar dough

You can use any type of candies you like here. We normally just go for the traditional m&ms, but peanut or peanut butter work great as well!

My family prefers milk chocolate chips, but any variety will work great. Use what you love.


  1. Add everything but the candy and chocolate chips to a mixing bowl and beat with a mixer.
  2. Stir in the chocolate and candy by hand.
  3. Spread into a 9×13 and bake!
oatmeal cookie batter

It really doesn’t get easier than this recipe! No waiting for butter to soften or creaming together the ingredients in a specific order.

Just dump it all together, mix, and bake!

Freezing cookie bars:

These oatmeal cookie bars freeze beautifully!

Be sure they are cooled completely before wrapping tightly and placing in the freezer. They’ll keep in the freezer for about a month.

Thaw overnight on the counter before serving.

More cookie bars to try:

christmas cookie bars
5 from 1 vote

Christmas Oatmeal Cookie Bars

Prep Time
10 mins
Cook Time
28 mins
Total Time
38 mins
Servings: 16 bars
Course: Dessert
Cuisine: American
Keyword: Christmas, easy bar recipes, kid-friendly recipes
Calories: 449 kcal

Thick & chewy oatmeal cookie bars all dressed up for Christmas! Toss in some red and green sprinkles to make them extra festive!


  • 2 1/2 cups rolled oats
  • 2 cups flour
  • 1 1/2 cups brown sugar
  • 1 1/4 cups butter, melted
  • 2 large eggs
  • 1 teaspoon baking soda
  • 1 teaspoon salt
  • 1 tablespoon vanilla
  • 1 1/2 cups red and green m&ms
  • 1/2 cup chocolate chips


  1. Heat oven to 350 degrees. Spray a 9×13 baking dish with non-stick cooking spray.
  2. Add everything but the m&ms and chocolate chips to the bowl of a stand mixer and beat until just combined.

  3. Stir in the candy and chocolate chips.

  4. Spread the batter into the baking dish. Bake for 28 minutes or until a tester comes out with just a few moist crumbs. Bars should look slightly underdone.

  5. Let cool 1 hour before cutting into bars.
Nutrition Facts
Christmas Oatmeal Cookie Bars
Amount Per Serving (1 bar)
Calories 449 Calories from Fat 198
% Daily Value*
Fat 22g34%
Saturated Fat 13g81%
Cholesterol 68mg23%
Sodium 374mg16%
Potassium 104mg3%
Carbohydrates 58g19%
Fiber 2g8%
Sugar 36g40%
Protein 6g12%
Vitamin A 538IU11%
Vitamin C 1mg1%
Calcium 63mg6%
Iron 2mg11%
* Percent Daily Values are based on a 2000 calorie diet.

Nutrition Disclaimer: All information presented on this site is intended for informational purposes only. I am not a certified nutritionist and any nutritional information shared on should only be used as a general guideline.