S’mores Cookie Bars

Line a 9x9-inch baking pan with parchment paper.

Combine melted butter, brown sugar, and granulated sugar in a bowl.

Add the egg and vanilla extract to the wet mixture and stir.

Mix in flour, baking soda, and salt until a dough forms.

Fold chocolate chips into the dough.

Arrange graham cracker pieces in a single layer on the parchment-lined pan.

Scoop cookie dough onto the graham cracker base in a grid pattern.

Press the dough down to fully cover the graham crackers.

Place a marshmallow on top of each dough mound.

Scatter Hershey pieces over the top (optional).

Bake until the edges are golden and the marshmallows are lightly toasted.