M&M Christmas Cookie Bars

M&M Blondies

I actually made these last year to share with the office. Since it was after Christmas I decided to save the post. When I made these I was looking for a Christmas blondie recipe. They ended up tasting like cookies but in bar form.


M&M Blondies

I was thinking that if I took these out of the oven five minutes sooner they would be softer and more blondie like. I bought the bag of mini green and red M&M’s at Wal-Mart on one of my US trips.

M&M Blondies

It was a horribly gray day so these photos aren’t that great.

M&M Christmas Cookie Bars

Yield: 12 bars

M&M Christmas Cookie Bars


2/3 cup butter

1 1/4 cup brown sugar

2 egg whites

1 tsp vanilla

2 cups plain flour

1/2 tsp baking soda

pinch of salt

3/4 cup mini M&M's

3/4 cup white chocolate chips


  1. Preheat oven to 350 F/180 C. Grease a 9x9 inch pan. In a small bowl whisk together the flour, salt and baking soda. Set aside.
  2. In a large bowl cream the butter and sugar until fluffy. Add the egg whites and vanilla nd beat until combined.
  3. Slowly add the flour mixture to the butter mixture and beat until just combined. Fold in the M&M's and chocolate chips.
  4. Spread into the prepared pan and bake for 20-25 minutes. Cool completely before cutting into squares.

adapted from M&M’s



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  1. Those look so tasty – why aren’t all of these fun brownie mix-ins available over here?! One question, why did you use just the whites of the egg instead of the whole egg?

    • It was a recipe for blondies so I thought the egg white would make them more blondie like. It didn’t!

      • Ooh, interesting! So next time, would you go with whole eggs? Also, thanks for answering, it’s so helpful to have someone reply with more information – definitely one up on recipe books 😀

        • I’m not sure. I would bake it for less next time and maybe I’d get something more blondie like. If I wanted to keep it cookie like a whole egg would probably be fine.