A dessert with s’mores combined with peanut butter? Here comes the Peanut Butter S’mores Dump Cake. An easy recipe that is sure to make everyone ask for more: gooey marshmallows, rich chocolate, and creamy peanut butter all combined into one tempting concoction.
I am a dessert lover, and I’m always looking for something quick and yummy to have for a snack. Thus, this s’mores-inspired cake is simply what I am looking for: easy and super tasty. Just add the ingredients in and let the oven do its magic!

So, this idea hit me while we were camping and realized we were out of graham crackers. I just tossed together some dump cake mix with marshmallows, chocolate, and peanut butter over the campfire. The kids totally loved it, and that’s how a new family favorite got started.
This chocolate marshmallow cake is definitely the favorite of get-togethers. This is something great for potlucks, parties, or even just chillin’ at home. You don’t have to be an elite baker-just layer it up and bake it!
Ready to indulge in the goodness of this Peanut Butter S’mores Dump Cake? It is seriously a people-pleaser and they will beg for the recipe.
Let’s check out how to bring those campfire vibes right into your kitchen!
Introduction to Peanut Butter S’mores Dump Cake
Take the campfire treat to another level with this peanut Butter S’mores Dump Cake, an easy dessert that blends s’mores ingredients with creamy peanut butter for a messily addictive twist on a classic favorite.
Talking about campfire – did you know about my Campfire Cupcakes?
These are, quite literally, the easiest of desserts-the ultimate simple desserts. Line your ingredients up in a pan and bake. Graham crackers, chocolate, marshmallows, and peanut butter-just great for parties, potlucks, and cozy nights in.

Quite versatile, if I am certain. Fill it with as much sweetness or top it with everything you may want-your own creation. Speaking generically, this is a score with the most amateur or advanced baker.
Get ready for the dessert that just makes fun a little fancy. This peanut butter s’mores dump cake is going to be super tasty with minimum work. It definitely isn’t one yummy treat you would want to skip!
Tips for Achieving the Perfect Texture and Flavor
Key to the perfect Peanut Butter S’mores Dump Cake is nailing the ingredient ratios. Adding an additional quarter cup of peanut butter will help bring a better flavor forward. Bake at 350°F or 175°C for even cooking and a golden-brown top. Allow to cool for 15 minutes; this sets marshmallows and makes slices easy to cut. To serve: Top each portion with a scoop of vanilla ice cream for the ultimate hot-cold contrast.
Or try out different variations-trying crushed Oreos instead of graham crackers, adding sliced bananas, or maybe even crunchy peanut butter for a nice textural element. That is the thing about dump cakes: you can make them how you want them.

Serve the cake directly from the baking dish to maintain that comforting homemade atmosphere. Great for both potlucks and family gatherings alike. Check out these tips for making an awesome Peanut Butter S’mores Dump Cake!

Baking Magic Awaits You
This is an extremely easy Peanut Butter S’mores Dump Cake, an out-of-this-world dessert with great flavor combining peanut butter, chocolate, and marshmallows all together in a neat package. Perfect for family gatherings or relaxed parties, everyone is sure to make positive remarks about it just by word of mouth, especially the gooey, delicious layers.
Give this a try, if you will. We would love to hear how it goes! Leave your comments below. Pin this so that when those cravings do come later, you will know exactly what to do. Tag us if you make it-we are super excited to check out your yummy creations!
Peanut Butter S’mores Dump Cake
Course: Dump Cakes12
servings15
minutes35
minutes400
kcalIngredients
1 cup crushed graham crackers
1 cup chocolate chips
1 cup peanut butter
1 box yellow cake mix
½ cup melted butter
1 jar marshmallow fluff
2 cups mini marshmallows (optional)
Steps
- Preheat the Oven
Set your oven to 350°F (175°C). While it heats up, grab a 9×13-inch baking dish. - Form the Graham Cracker Base
Spread the crushed graham crackers evenly across the bottom of the baking dish. This layer acts as the “crust,” capturing that signature s’mores crunch. - Add the Chocolate and Peanut Butter Layers
Here’s where you can get creative. Sprinkle the chocolate chips on top of the graham crackers. Then, add dollops of peanut butter over the chocolate chips, spreading gently if you like. Alternatively, you can swap the order—peanut butter first, then chocolate. Both methods work beautifully, so go with what feels right! - Pour the Cake Mix
Evenly pour the dry yellow cake mix over the peanut butter and chocolate. No mixing is required—just spread it out to cover the entire surface of the dish. - Add the Butter
Slowly drizzle the melted butter across the cake mix. Try to cover as much of the surface as possible, as the butter will help create a golden, crispy top. - Top with Marshmallow Fluff or/and Mini Marshmallows
If you’re using only marshmallow fluff, dollop it on top of the cake mix. If you prefer more fluff add also mini marshmallows, scatter them generously across the surface. Both options will give you that iconic gooey s’mores topping! - Bake to Perfection
Place the baking dish in the oven and bake for 30-35 minutes, or until the top is golden brown and the marshmallows are lightly toasted. Keep an eye on it towards the end to ensure the marshmallows don’t burn.
