With a soft, chewy cookie base, pockets of melted chocolate, and golden marshmallows on top, this recipe brings that campfire treat vibe right into your kitchen.
Grease a 9x13 baking pan or line it with parchment paper for easy cleanup
In a separate large bowl, use a spoon or spatula to stir together the softened butter, brown sugar, and granulated sugar until smooth and combined, if you are using an electric mixer I recommend using it on low to medium speed
Add in the eggs, egg yolk, and vanilla extract, stirring again until fully incorporated
In another bowl, whisk together the flour, cornstarch, baking powder, and salt
Slowly add the dry ingredients into the wet mixture, stirring until combined, don’t over mix
Cut up 1/2 the chocolate pieces into smaller chunks, setting the rest aside for later
Break up the graham crackers with your hands, set 1/2 aside for later
Gently fold in the chocolate pieces, graham cracker chunks, and about half of the mini marshmallows
Press the dough into an even layer in the prepared baking pan
Bake for 25 minutes, until lightly golden on the edges.
Remove from the oven, sprinkle the remaining marshmallows, extra chocolate bars and graham cracker pieces across the top of the bars, then return to the oven for 5 more minutes, just until the marshmallow layer starts to turn golden brown
Let cool & enjoy!
Notes
Store leftovers in an airtight container at room temp for 2–3 days
Softened butter is key! Melted butter can make the bars overly greasy, so let your butter sit at room temperature before starting.
If you love extra gooey texture, add a mix of mini marshmallows and marshmallow fluff to the top of the marshmallow creme before the final bake.
Use a mix of milk chocolate chips and dark chocolate chips for a richer chocolate flavor, or toss in a few peanut butter chips for a fun twist.