This S’mores Oatmeal Cookie Skillet combines two of the best desserts into one irresistible treat. Chocolate chip cookie dough combines with marshmallows and graham crackers. The result is a gooey skillet perfect for feeding a crowd!

s'mores oatmeal cookie skillet with a spoon dipped in.
This S’mores Oatmeal Cookie Skillet combines two tasty desserts into one irresistible recipe that’s so easy to make!

What Is a S’mores Oatmeal Cookie Skillet? 

A s’mores oatmeal cookie skillet is exactly what it sounds like! It’s one of our all-time favorite desserts!

We took all the soft, chewy texture of an oatmeal cookie, and turned it into a skillet recipe. Then, we topped it off with chocolate chips and marshmallows for a gooey, decadent s’mores taste. Easier than a cookie and eaten with less than s’mores, it’s this oatmeal cookie skillet is truly to die for. Plus, it’s ready in minutes and great for feeding a crowd! 

Ingredients You’ll Need

This oatmeal cookie skillet comes together with just 9 pantry staples for a super simple, budget-friendly recipe! Here’s everything you’ll need: 

  • Butter – This helps create a rich, buttery flavor and browns the oats. 
  • Brown Sugar – We use light brown sugar to sweeten this oatmeal cookie skillet while keeping the texture soft and moist. 
  • Oats – Old-fashioned oats work best to provide a dense, slightly chewy texture. 
  • Flour – We use regular all-purpose flour to help form the base of the oatmeal cookie skillet. 
  • Graham Cracker Crumbs – You can find pre-made graham cracker crumbs in the baking section of your local grocery store. Or, easily make your own by adding graham crackers to a sealable bag, and crushing them up into fine crumbs. 
  • Baking Powder (NOT baking soda) – Make sure your baking powder is fresh for a fluffy s’mores oatmeal cookie skillet. 
  • Salt – Just a sprinkle helps enhance the rest of the ingredients for the best flavor. 
  • Marshmallows – We prefer to use mini marshmallows so you get gooey goodness in every bite. However, regular-sized varieties work, too. 
  • Chocolate Chips – We use semi-sweet chocolate chips, but dark or milk chocolate also tastes great! You can even chop up chocolate bars. Look for dairy-free varieties, if needed.

Easier than any oatmeal cookie recipe you’ll ever make, this skillet bakes in 20 minutes! 

  1. Create the oatmeal cookie base. In a large bowl, combine the butter and sugar, beating it with a hand mixer or stand mixer until it is light and fluffy. Then, add the oats, flour, graham cracker crumbs, baking powder, and salt. Beat again gently until the ingredients are combined and crumbly. 
  2. Layer. Press ½ of the oat mixture into the bottom of a cast-iron skillet. Sprinkle marshmallows and chocolate chips on top followed by the remaining oat mixture. 
  3. Bake. Place the skillet in the oven until the oats are golden brown and the cookie is fluffy. Sprinkle more marshmallows and chocolate chips on top. Then, bake again until melted and gooey. 
  4. Cool. Let the skillet cool slightly, and serve warm! 
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Variations 

For this s’mores oatmeal cookie skillet, we kept the recipe pretty simple. However, feel free to mix and match a variety of add-ins and toppings like: 

  • Dried Fruit
  • Peanut Butter or Peanut Butter Chips
  • Chopped Nuts
  • Cinnamon
  • Candy Pieces
  • Icing
  • A Drizzle of Chocolate Sauce
  • A Sprinkle of Sea Salt on Top
  • A splash of Vanilla Extract
a s'mores oatmeal cookie skillet.

How to Serve

Once removed from the oven, allow your s’mores oatmeal cookie skillet to cool and set for about 10 minutes. Then, top it off with a dollop of ice cream or whipped cream, and serve it warm with a few spoons!

Storage

This s’mores oatmeal cookie skillet is best served right from the oven while it’s still warm. However, you can store leftovers in an airtight container at room temperature or in the fridge. They will stay fresh for one to two days.

Or, slice the cookie skillet into pieces, transfer them to a sealable bag, and freeze them for later! Cookie pieces will stay fresh in the freezer for up to three months.

Thaw leftovers in the fridge overnight. Then, serve cold or at room temperature. Or, warm them for a few seconds in the microwave just until heated through!

overhead image of a s'mores cookie skillet.

 

Can I make regular oatmeal cookies with this recipe? 

We don’t recommend it as the dough won’t rise correctly. Try our s’mores cookies instead! 

What if I don’t have a cast-iron skillet? 

No worries! Feel free to use a regular skillet instead! Just make sure it’s oven-safe. Or, use a baking dish instead.

Can I make this oatmeal cookie skillet gluten-free? 

Sure! Just swap out the flour for a 1:1 gluten-free all-purpose flour instead. Then, crush up your favorite gluten-free graham crackers to incorporate into the dough. 

a spoon holding a bit of a s'mores cookie skillet.

More S’mores Desserts You’ll Love

If you didn’t already know, we LOVE s’mores! As a result, we’ve got tons of desserts to make all year long. 

overhead image of a s'mores oatmeal cookie skillet

S’mores Oatmeal Cookie Skillet

5 from 1 vote
Author: Food Dolls
Servings: 6 servings
Prep: 5 minutes
Cook: 20 minutes
Cool Time: 10 minutes
Total: 25 minutes
This S’mores Oatmeal Cookie Skillet combines two of the best desserts into one irresistible treat. Made with simple ingredients and baked in a single skillet, it’s the perfect easy option for feeding a crowd!

Ingredients  

  • 1 cup butter softened
  • 1 cup light brown sugar firmly packed
  • 1 cup old-fashioned oats
  • 3/4 cup all-purpose flour
  • 1 cup graham cracker crumbs
  • 1 teaspoon baking powder
  • 1 teaspoon kosher salt
  • 2 cups mini marshmallows divided
  • 1 cup semisweet chocolate chips + more for topping

Instructions 

  • Preheat the oven to 350 degrees Fahrenheit.
  • Add the butter and sugar to a large bowl, and beat until light and fluffy.
    1 cup butter, 1 cup light brown sugar
  • Add the oats, flour, graham cracker crumbs, baking powder, and salt. Beat again on low until the ingredients are well-combined a crumbly.
    1 cup old-fashioned oats, 3/4 cup all-purpose flour, 1 cup graham cracker crumbs, 1 teaspoon baking powder, 1 teaspoon kosher salt
  • Press ½ of the oat mixture into the bottom of a 10-12” cast-iron skillet. Sprinkle ½ of the marshmallows and chocolate chips on top followed by the remaining oat mixture.
    2 cups mini marshmallows, 1 cup semisweet chocolate chips + more for topping
  • Bake for 15 minutes.
  • Remove the skillet from the oven, and add the remaining marshmallows and extra chocolate chips, if desired.
  • Bake again for 5 minutes.
  • Remove the skillet from the oven, and cool for 10 minutes.
  • Serve warm, and enjoy!
  • Store in an airtight container at room temperature or in the fridge for 1-2 days.

Video

Nutrition

Serving: 1serving | Calories: 559kcal | Carbohydrates: 99g | Protein: 8g | Fat: 15g | Saturated Fat: 8g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 0.02g | Cholesterol: 6mg | Sodium: 620mg | Potassium: 364mg | Fiber: 5g | Sugar: 62g | Vitamin A: 81IU | Calcium: 155mg | Iron: 4mg

Nutrition information is automatically calculated, so should only be used as an approximation.

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Meet Alia & Radwa

Welcome to Food Dolls! We’re so glad you found us. We are Alia and Radwa, sisters who want to share simple and easy recipes with you. We hope you find recipes here that you enjoy making as much as we do! Learn more about us!

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