These chewy s'mores bars are perfect for a crowd. They're easy to make, and everyone loves the ooey gooey bar cookies. It's almost better than a campfire!
Crush your graham crackers into fine crumbs and set aside.Beat together butter and sugar until light and fluffy. Add egg and vanilla and beat until well combined. Add baking powder and salt, and mix once again.
3/4 cup unsalted butter, 2/3 cup sugar, 1 egg at room temperature, 1 teaspoon vanilla, 1 teaspoon baking powder, 1/2 teaspoon salt
Add graham crackers and flour and stir until just combined.
20 graham crackers, 1/2 cup flour
Grease 9x13 pan and pat the graham cracker mixture into the pan in an even layer, reserving around a cup or a little more for a topping.
Pour chocolate chips over crust.
1 1/2 cups chocolate chips
Twice each marshmallow in half or cut with scissors. Place sticky side down in rows over chocolate. Crumble the last of the graham cracker mixture over top.
20 large marshmallows
Bake in a 350 degree oven for 25-30 minutes.
Let cool fully before cutting around the marshmallows to make 40 bars (8 rows, 5 across).
Serve at room temperature and store in a sealed container for up to three days.