Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a large mixing bowl, combine the melted salted butter, sugar, honey, vanilla extract, and the large egg. Whisk together until fully blended and smooth.

In another bowl, whisk together the all-purpose flour, graham cracker crumbs, baking powder, baking soda, and kosher salt. Gradually add this to the wet ingredients, stirring gently until just combined.

Fold in the milk chocolate chips, mini marshmallows, and broken chocolate bar pieces until evenly distributed.

Using a cookie scoop, portion the dough onto the baking sheet, spacing them about 2 inches apart. Place a halved large marshmallow on top of each dough ball.

Bake for 10-12 minutes or until the edges are golden brown and the marshmallows are lightly toasted. Allow to cool slightly before transferring to a wire rack.