Beat the peanut butter, eggs, and sugar in a bowl.
Press half into a greased 11 x 7 pan.
Spread the Marshmallow on top.
Lay on the hershey bars.
Spread the rest of the dough on top.
Bake at 350 for 20-23 mins until lightly browned.
Let cool to room temp.
At this point if you cut they will be ooey gooey.
To firm up, pop in fridge a few hours.