S"mores Skillet Cookie
Tested & Approved
by Sophie Lane
There's nothing quite like pulling a bubbling, golden-brown skillet straight from the oven and watching everyone reach for a spoon before it even hits the table. This s'mores skillet cookie combines everything you love about campfire s'mores with the rich, chewy texture of a deep-dish cookie baked in cast iron.
Published: August 8, 2026
Simple, everyday ingredients and clear, step-by-step instructions — every recipe made in Dorothy"s kitchen before it reaches yours. Jump to the full recipe card below.
PrintS"mores Skillet Cookie
A warm, gooey deep-dish cookie loaded with chocolate chunks, graham cracker crumbs, and toasted marshmallows, baked in a cast iron skillet.
- Prep Time: 15 minutes
- Cook Time: 22 minutes
- Total Time: 37 minutes
- Yield: 4 1x
- Method: Baked
- Cuisine: American
Ingredients
- 1/2 cup unsalted butter, melted
- 3/4 cup brown sugar, packed
- 1/4 cup granulated sugar
- 1 large egg
- 1 egg yolk
- 1 teaspoon vanilla extract
- 1 1/2 cups all-purpose flour
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 3/4 cup graham cracker crumbs
- 1 1/2 cups semisweet chocolate chunks, divided
- 2 cups mini marshmallows
- 2 whole graham crackers, broken into pieces, for topping
- Chocolate syrup, for drizzling (optional)
Instructions
- Preheat the oven to 350°F (175°C) and lightly grease a 10-inch cast iron skillet.
- In a large bowl, whisk together the melted butter, brown sugar, and granulated sugar until smooth.
- Whisk in the egg, egg yolk, and vanilla extract until well combined.
- Add the flour, baking soda, salt, and graham cracker crumbs. Stir just until a thick dough forms.
- Fold in 1 cup of the chocolate chunks, reserving the rest for topping.
- Press the dough evenly into the prepared skillet.
- Bake for 20-22 minutes, until the edges are set and the center is just slightly underbaked.
- Remove the skillet from the oven and immediately scatter the remaining chocolate chunks and mini marshmallows over the top.
- Switch the oven to broil and return the skillet for 1-2 minutes, watching closely, until the marshmallows are golden and toasted.
- Top with broken graham cracker pieces and a drizzle of chocolate syrup. Let cool for 5 minutes before serving warm with spoons.
Notes
Watch the marshmallows closely under the broiler as they can go from golden to burnt in seconds. For extra gooeyness, slightly underbake the cookie base before adding the toppings. Leftovers can be reheated in the oven at 300°F for 5-10 minutes to restore the melty texture.
Frequently Asked Questions
Can I make this s'mores skillet cookie without a broiler?
Yes, simply bake the marshmallow topping at 350°F for an additional 5-7 minutes until golden, or toast the marshmallows with a kitchen torch for a more controlled campfire finish.
What size skillet works best for a s'mores skillet cookie?
A 10-inch cast iron skillet is ideal since it gives the cookie enough room to spread while staying thick and gooey in the center. A 9-inch skillet also works but will need a few extra minutes of bake time.
Can I prepare the s'mores skillet cookie dough ahead of time?
Yes, you can press the dough into the skillet, cover, and refrigerate for up to 24 hours. Let it sit at room temperature for 15 minutes before baking as directed.
Why did my marshmallows melt into the cookie instead of staying on top?
This happens if the marshmallows are added before the cookie base is fully baked. Make sure the base is set around the edges before adding the marshmallow topping and broiling briefly.
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