S’mores Peanut Butter Cookie Skillet (or Bars!) Recipe

I absolutely love sharing this S’mores Peanut Butter Cookie Skillet (or Bars!) Recipe because it brings together some of my all-time favorite flavors in the most irresistible way. Imagine rich peanut butter cookie dough, pockets of gooey marshmallows, and melted dark chocolate chunks all baked into one warm, fudgy skillet or pan of bars. Whether you’re after a cozy dessert for a family night or a show-stopping treat for summer gatherings, this recipe never fails to delight. It’s simple, gluten-free-friendly, and incredibly satisfying every single time I make it.

Why You’ll Love This S’mores Peanut Butter Cookie Skillet (or Bars!) Recipe

One of the biggest reasons I’m head over heels for this recipe is the flavor. It’s the perfect marriage of peanut butter’s salty creaminess with the classic toasted s’mores trio of chocolate, marshmallows, and graham crackers. The dark chocolate provides a bittersweet counterpoint that really plays nicely against the sweetness, and the mini marshmallows ooze that nostalgic gooey texture we all crave. Every bite tastes like a little celebration of childhood flavors meeting adult sophistication.

Beyond the deliciousness, this recipe is surprisingly easy to pull together. I appreciate that it uses straightforward ingredients that I usually have on hand, and unlike many desserts, it doesn’t require complicated techniques. Plus, the flexibility to bake it in a skillet or as bars means I can easily adapt to what I’m craving or the occasion. Whether it’s a casual weeknight treat or a centerpiece for a summer party, this recipe shines. It’s become a staple in my kitchen for those times when I want a quick, comforting dessert that transports me straight to camping memories with an elevated twist.

Ingredients You’ll Need

The beauty of this dish is how simple yet thoughtfully combined the ingredients are. Each one plays a crucial role, whether it’s building flavor, giving the cookie its texture, or adding that nostalgic s’mores element. Having quality ingredients often makes all the difference in making this dessert truly memorable.

• Dark brown sugar: Adds deep, caramel-like sweetness and moisture to the cookie dough.
• Creamy natural peanut butter: Just peanuts and salt for that pure, nutty base without any extra oils or sugars.
• Eggs: Help bind and add richness, ensuring the cookie is soft but sturdy.
• Virgin coconut oil: Provides healthy fats and a subtle tropical hint while keeping the dough tender.
• Vanilla extract: Enhances the overall flavor with warm, sweet notes.
• Fine blanched almond flour: Gives a gluten-free structure with a light, tender crumb.
• Rolled oats: Add wholesome texture and slight chewiness.
• Baking soda: Leavens the dough for a slight lift and softness.
• Kosher salt: Balances sweetness and intensifies the peanut butter flavor.
• 70% dark chocolate bars: Coarsely chopped for melty puddles of bittersweet chocolate.
• Mini marshmallows: Frozen beforehand to keep their shape and add gooey pockets.
• Graham cracker sheets: Broken pieces sprinkled on top for that irresistible crunch.

Directions

Step 1: Preheat your oven to 350ºF. Grease a 9 or 10-inch oven-safe skillet with a little coconut oil or butter, or line a 9-inch square pan with parchment paper if making bars instead.

Step 2: In a large bowl, whisk together the packed dark brown sugar, creamy natural peanut butter, and room temperature eggs until the mixture becomes smooth and creamy without lumps.

Step 3: Add the melted and cooled virgin coconut oil along with the vanilla extract. Mix these in well for about 30 seconds to 1 minute until fully emulsified and silky.

Step 4: Using a wooden spoon or sturdy spatula, fold in the blanched almond flour, rolled oats, baking soda, and kosher salt. Mix until everything is just combined, being careful not to over-mix so the texture stays tender.

Step 5: Chop one of the dark chocolate bars roughly, about 1 cup worth, and fold half of these chunks into the batter evenly.

Step 6: Transfer the batter to your prepared skillet or pan and smooth it out so it reaches the edges evenly.

Step 7: Top the batter with the remaining chocolate chunks, then gently press in the frozen mini marshmallows and the broken graham cracker pieces. Press lightly to secure them but don’t submerge them too deep.

Step 8: Bake your skillet or bars in the preheated oven for 20 to 25 minutes. The edges should be just golden brown and the center slightly underbaked to keep it fudgy and gooey.

Step 9: Remove from the oven and let cool for 15 to 20 minutes before slicing. For an extra indulgent touch, I love serving it warm with a big scoop of vanilla ice cream on top.

Servings and Timing

This recipe yields about 14 generous servings, perfect for sharing with a crowd or indulging over several days. The prep time is quick, just around 20 minutes, followed by a bake time of approximately 20 minutes. Including the cooling period, you’re looking at a total time of about 40 minutes from start to finish. This makes it a fantastic last-minute dessert that feels special without a ton of effort.

How to Serve This S’mores Peanut Butter Cookie Skillet (or Bars!) Recipe

When I serve this skillet, I love to keep things simple but cozy. A big scoop of vanilla ice cream melting right on top adds that creamy contrast to the warm fudgy cookie. It also balances the intense peanut butter and chocolate flavors beautifully. For a touch of crunchy freshness, I sometimes sprinkle an extra handful of crushed graham crackers or even a few chopped toasted nuts on top just before serving.

Presentation-wise, serving it straight from the skillet gives such a homey, rustic vibe that invites everyone to dig in family-style. If I’m making bars, I cut them into neat squares and arrange them on a platter with maybe a small bowl of extra marshmallows or chocolate chunks for dunking. I find this dessert pairs wonderfully with a cold glass of milk, hot coffee, or even a rich, creamy latte for those who want a caffeinated boost.

This recipe is perfect for casual weeknight dinners, summer cookouts, holiday gatherings, or anytime you want a feel-good dessert. I like it best warm or at room temperature so the marshmallows stay soft but the cookie holds its shape well. Cold servings are tasty too but the texture shifts to more fudgy and less gooey, so I recommend warming leftovers gently before eating.

Variations

One of the things I love about the S’mores Peanut Butter Cookie Skillet (or Bars!) Recipe is how adaptable it is. If you want a dairy-free or vegan version, I recommend using dairy-free dark chocolate and substituting the eggs with flax eggs or chia eggs, though the texture will be a bit different but still delicious. You can also swap the coconut oil for dairy-free butter or even avocado oil depending on your pantry.

If peanut butter isn’t your favorite, try almond or cashew butter instead for a different nutty twist that pairs excellently with the chocolate and marshmallow flavors. For a gluten-free version, simply ensure you use gluten-free oats and graham crackers—something I always double-check to keep everyone happy and safe.

For even more flavor play, consider mixing in some chopped nuts, like walnuts or pecans, or add a sprinkle of sea salt on top before baking to enhance the chocolate’s richness. Another fun method is to cook this recipe as bars in a smaller pan but add a layer of melted chocolate spread or marshmallow fluff in the center before baking for an extra gooey surprise.

Storage and Reheating

Storing Leftovers

After enjoying your S’mores Peanut Butter Cookie Skillet or bars, you can store any leftovers in an airtight container at room temperature for up to 3 days. If it’s particularly warm or humid, I prefer refrigerating them to keep the marshmallows from getting overly sticky. Just be sure to let the dessert come to room temperature or warm it slightly before eating to restore that lovely gooey texture.

Freezing

This dessert freezes wonderfully if you want to save some for later. I like to cut the bars into individual portions and wrap them well in plastic wrap, then place them in a freezer-safe container or zip-top bag for up to 2 months. The skillet version can also be frozen but it’s easier to portion beforehand if possible. To thaw, I transfer the bars to the fridge overnight and then gently warm before serving.

Reheating

To reheat, I recommend using a low oven temperature (around 300ºF) or a toaster oven for about 5 to 10 minutes — just until warm and the marshmallows are soft again. Avoid microwaving for too long as it can make the texture rubbery or overly melty. If microwaving, use short bursts of 15 seconds and check in between. Reheating this way helps bring back that freshly baked, melty magic every time.

FAQs

Can I use crunchy peanut butter instead of creamy?

You absolutely can! Using crunchy peanut butter will add a bit of extra texture to the cookie dough, which some people really enjoy. Just be aware it might affect the smoothness of the batter slightly, but the flavor will still be amazing.

Can I make this recipe nut-free?

Since peanut butter and almond flour are integral, making it fully nut-free is a bit tricky. However, you could try sunflower seed butter and a gluten-free oat flour mix as substitutes, though the texture and flavor will be different. Always test in small batches to find your favorite combo.

Do I have to freeze the marshmallows before adding them?

Freezing the mini marshmallows helps them hold their shape during baking, preventing them from melting completely and becoming too flat. It preserves that classic gooey, puffy look everyone loves, but if you’re in a pinch you can skip this step and still get tasty results.

Can I make these bars ahead of time for a party?

Yes! Making the bars a day in advance works perfectly. Just store them in an airtight container at room temperature or in the fridge depending on your climate. You can warm them briefly in the oven before serving to revive that fresh-baked feel.

What’s the difference between baking this as a skillet versus bars?

Baking in a skillet results in a thicker, fudgier, and slightly more rustic treat perfect for scooping, while bars baked in a square pan are firmer and easier to portion. Both are delicious, so I choose based on the serving style and occasion.

Conclusion

I hope you’ll give this S’mores Peanut Butter Cookie Skillet (or Bars!) Recipe a try soon because it’s truly one of my favorite ways to enjoy s’mores with a peanut butter twist. The flavors, the textures, and the simplicity make it feel like a special occasion no matter when you bake it. I can’t wait for you to make this and share it around your own table — it’s a guaranteed crowd-pleaser that always brings smiles and happy memories.

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