M&M Cookie Bars

G made these for I to take on her guide camp. There were really yummy! Soft, thick, squidgy and gooey in the middle!

265g plain flour
1/2 tsp bicarbonate of soda
170g,butter  melted and cooled slightly
200g brown sugar
110g caster sugar
1 large egg
1 large egg yolk
2 tsps vanilla extract
1 large bag M&M's, divided

Preheat the oven to 160oc.

 Line a 9X13-inch baking pan with foil.

2. Mix the flour, salt, and baking soda together in medium bowl; set aside. Whisk the melted butter and sugars in a large bowl 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 half of the 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.

3. Bake until the top of the bars is light golden brown, slightly firm to the touch, and edges start pulling away from sides of pan, 24-28 minutes.

Cool on a wire rack to room temperature. Cut into squares and serve.