The perfect blend of graham cracker, marshmallow, cookie dough and chocolate in one gooey cookie!
Cream butter with sugars in a stand mixer or a bowl using a hand mixer. Add eggs and vanilla.
Beat on medium speed until mixed well and there are no visible lumps of butter. Turn off mixer.
Add flour, baking soda, salt and chocolate chips to mixing bowl. Pulse mixer by turning off and on quickly, just until dry ingredients are incorporated.
Fold in Golden Grahams and mini marshmallows with spatula, do not use mixer. Fold just until evenly distributed into batter.
With large cookie scoop, or spoon, shape dough into 18 balls (about the size of golf balls) place on parchment lined cookies sheets, 6 cookies per sheet.
Bake for about 7-8 minutes.
Remove from oven.
Place one half of a large marshmallow on each cookie, put back in oven and bake for an additional 2 minutes.
Remove from oven again, slightly flatten if needed, and place 1-2 rectangles from a Hershey bar on top of marshmallow.
Cook for an additional minute.
Remove from oven (for the last time), with a knife, spread the melted chocolate so it covers the marshmallow, or leave the chocolate without spreading if you like "HERSHEY'S" showing!