If you’ve been reading for any length of time, you are probably aware of my love for cookies and bars that are thick and chewy. These thick and chewy M&M cookie bars just might be absolute perfection in bar form. They are nice and soft, and of course there are lots of M&M’s sprinkled throughout! I love that half the M&M’s are mixed into the batter, and half are pressed into the top to make sure these bars turn out nice and pretty. I made these for some friends who stayed with us last weekend, and they were gone by the end of the weekend. These M&M cookie bars are definitely a treat you can’t turn down!
*Note: I baked mine in a 9×9 pan because it was what I had available. However, I do think a 9×13 pan works better. If you use a 9×13 pan (as written), yours will not be quite as thick.
Thick and Chewy M&M Cookie Bars
Yield: 1 9x13 pan
Prep Time: 15 min
Cook Time: 30 min
Total Time: 45 min
These cookies are soft, chewy, and chock full of M&M's!
2 1/8 cups flour
1/2 tsp salt
1/2 tsp baking soda
12 Tbsp butter (1 1/2 sticks), melted and cooled slightly
1 cup brown sugar
1/2 cup white sugar
1 large egg
1 large egg yolk
2 tsps vanilla extract
1 12oz bag M&M's, divided
Preheat the oven to 325 degrees. Adjust the oven rack to lower-middle position. Grease a 9x13 pan and set aside.
In a medium sized bowl, whisk together the flour, salt, and baking soda and set aside.
In a large bowl, whisk the melted butter and sugars until combined. Add the egg, egg yolk, and vanilla and mix well. Using a rubber spatula, fold the dry ingredients into the egg mixture until just combined; do not overmix. Fold in 1 cup of M&M's and turn the batter into the prepared pan, smoothing the top with the spatula. Sprinkle remaining M&M's on top and press in slightly.
Bake 25-30 minutes, until the top of the bars is light golden brown, slightly firm to the touch, and edges start pulling away from sides of pan. Cool completely before cutting.