Name: S’mores Cookie Bars from the Pot
Yield: 14

S’mores Cookie Bars are gooey, marshmallow-filled, chocolate-layered, and graham-cracker oatmeal crumb coated perfection.

author’s note

No Campfire? Make These Instead!

There are few desserts that disappear faster at my house than anything S’mores-inspired. The problem? I don’t exactly have bonfires happening every night. And honestly, sometimes I want all those classic flavors without smelling like smoke or trying to keep marshmallows from catching fire.

So I started playing around with turning a reliable summer treat into a bar. I knew I wanted more than just graham crackers and chocolate layered together. I wanted a thick, chewy cookie base with some texture and flavor built right in.

After a few test batches, these S’mores Cookie Bars became a reliable version. The oatmeal cookie layer adds a soft and chewy texture, the marshmallow fluff stays evenly gooey, and the graham cracker crumble on top gives that unmistakable S’mores flavor. The first time I made them, I cut into the pan while they were still slightly warm and immediately knew I had a problem. They disappeared way too fast.

And honestly? I kind of love that they taste like summer, no matter what month I make them.

Crafting s'mores cookie bars, from creating the cookie layer to adding chocolate chips, marshmallow fluff, and the crumble topping, displaying the finished bars.

S’mores Cookie Bars Ingredients

Ingredient	Tips & Swaps
Butter	Let the butter cool before mixing. Hot butter can make greasy bars.
Light brown sugar	Pack the sugar when measuring for the right sweetness and texture.
Old-fashioned oats	Avoid quick oats or steel cut oats; they won’t work in this recipe.
Milk chocolate chips	It is satisfying to milk chocolate for classic S’mores flavor. Dark or semi sweet work too.
Marshmallow creme	Warm for a few seconds before spreading. It makes life much easier.
Graham crackers	Crush coarsely instead of turning them into dust. Bigger bits add texture.

How To Make S’mores Cookie Bars Tips

Make dough: Mix together the butter, sugar, flour, oats, baking soda, and salt.
Bake the base: Press half the dough into a lined baking pan and bake briefly.
Filling: Sprinkle chocolate over the crust, then spread marshmallow fluff on top.
Finish topping: Stir crushed graham crackers into remaining dough and crumble over the marshmallow layer.
Bake & cool: Bake until lightly golden, then let cool completely before slicing into bars.

chelsea’s recipe tip

My Top Tips For Success

Use an 8×8 pan: I prefer it for thick bakery-style bars.
Use high-quality chocolate: Better chocolate melts smoother and tastes richer.
Let marshmallow peek through: Don’t stress about completely covering the top layer.
Cool fully before cutting: Warm bars are satisfying, but fully cooled bars slice much cleaner.

Storage

Cool and Cut: Allow bars to cool completely in the pan, then lift them out using the parchment paper and cut into squares.
Store Airtight: Place bars in an airtight container with parchment paper between layers to prevent sticking.
Keep Fresh: Store at room temperature for up to 3 days or refrigerate for up to 1 week.