S'moreo Cookie Bars contain Oreo's for the biscuit part of the s'mores. They are surrounded by gooey chocolate chip cookie dough, marshmallows and chocolate buttons!
Preheat the oven to 180°C (350°F) and line a 9"x9" baking pan with baking paper.
Beat the partially melted butter until creamy and add the brown sugar and sugar creaming them together.
Add the eggs one at a time beating well in between. Add the vanilla extract.
Add in the flour and baking powder and mix together.
Add the chocolate chips and crush 2 of the Oreo cookies and stir in to the batter.
Spread half of the cookie dough into the base of the baking pan.
Top with the remaining 14 Oreos, spread around the base.
Sprinkle over the chocolate buttons in an even layer.
Place the marshmallows around on top. Some can be halved, others whole, until they are spread around reasonably evenly. Remember they will spread when baking.
Dot over the remaining cookie dough so the marshmallows and Oreos are mostly covered.
Bake for around 25-35 minutes. The middle will wobble due to the marshmallows but the tops and sides will be lightly golden. I take mine out at 25 minutes for a more gooey, slightly under-baked cookie dough.