thick & chewy m&m cookie bars
1 1/2 sticks, melted and cooled slightly
large egg yolk
Preheat the oven to 325 degrees. 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.
Fold the dry ingredients into the egg mixture until just combined. Don't overmix.
Fold in 1 cup of M&M's and spread 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.
Don't overbake! They probably won't seem thoroughly baked even though they are golden brown but they will set when cooled.