These s'mores cookie bars are a soft and chewy graham cracker cookie, topped with toasted mini marshmallows and chocolate bars for the ultimate s'mores experience from home!
Preheat oven to 350 F. Line a 9x13 baking pan with parchment paper, or spray with cooking spray and set aside.
Place butter and sugars together in a large mixing bowl and beat together 3-4 minutes until light and airy. Add in eggs and vanilla and mix together.
Add the baking soda, salt, graham cracker crumbs and flour and mix until incorporated.
Press cookie dough into the bottom of the 9x13 baking pan. Bake for about 16-18 minutes. The middle of the cookie base should still look slightly doughy and glossy, but the edges should look done.
Remove from the oven and top with marshmallows. Return to the oven for about 3-4 minutes, until they are all puffed. Then turn on the broiler and toast the tops for 30-60 seconds.
Top the cooked and warm marshmallows with hershey squares, or even chocolate chips. Allow to cool before cutting into them.
Notes
I have always just put chocolate bars on top, but I think chocolate chips would be great too. It all turns into melty chocolate anyway.To cut these I always spray my knife with cooking spray or coat in oil so it doesn't stick to the marshmallow.I have given both cups and grams as measurements. Grams will be more precise, especially when measuring flour. If you don’t have a kitchen scale, no problem! Just lightly spoon flour into your measuring cup to insure its not packed in there. Light and fluffy is the key.