S’mOREO Brownie Icebox Bars
April 21, 2026
A chilled, layered brownie dessert packed with gooey s’mores flavor and a creamy marshmallow finish!
S’mOREO Brownie Icebox Bars take a simple brownie mix and turn it into something layered, chilled, and super hard to stop eating. You get a soft, fudgy brownie packed with S’mOREOs, a light marshmallow cream layer, and a drizzled chocolate top with extra toppings. It combines different textures while still keeping that classic brownie flavor, just with a fun s’mores upgrade.
Flavor Profile
This dessert leans rich and chocolatey with that classic s’mores flavor built right in. The brownie base is soft and fudgy, the marshmallow layer is light and creamy, and the S’mOREOs bring in that mix of cookie crunch and gooey filling. The chocolate drizzles sets to give a slight snap before you hit the soft layers underneath.
Why You’ll Love This Recipe
- Every bite has real S’mOREO flavor baked right into the brownie, not just sitting on top.
- The marshmallow cream layer adds a light, fluffy contrast that keeps it from feeling too heavy.
- It’s a chilled dessert, so it’s perfect for make-ahead and easy slicing.
- You get multiple textures in one bite, from fudgy to creamy to slightly crunchy.
- It uses a brownie mix, so it’s simple but still feels extra themed.
The Twist
Instead of layering cookies in between, the S’mOREOs are folded directly into the brownie batter. That means the cookie and cream pieces melt into the base while baking, giving you that gooey s’mores flavor in every bite instead of just one layer.
Ingredient Highlights
- Brownie mix: Prepared as directed for a classic fudgy base that holds the layers.
- S’mOREOs: Chopped into chunks so you get pockets of cookie and marshmallow throughout.
- Heavy whipping cream: Whips into a light layer that balances the rich brownie.
- Marshmallow fluff: Blends into the cream for that soft, s’mores-style flavor.
- Chocolate chips: Melted and drizzled on top for a smooth chocolate finish.
S’mOREO Brownie Icebox Bars
Ingredients
- 1 box brownie mix + ingredients listed
- 1 package S’mOREOs, chopped
- 1 cup heavy whipping cream
- 2 tbsp powdered sugar
- 1/2 cup marshmallow fluff
- 1/2 cup chocolate chips
- Optional: mini marshmallows, mini chocolate chips
Instructions
- Preheat the oven according to the brownie mix directions and line a 9×9 pan with parchment paper. Spray with baking spray for easy removal.
- Chop the S’mOREOs into chunks. Fold about 3/4 of them into the brownie batter.
- Pour the batter into the pan and bake as directed. Let cool completely.
- In a bowl, whip the heavy cream and powdered sugar until soft peaks form. Fold in the marshmallow fluff until smooth and light.
- Spread the marshmallow cream evenly over the cooled brownie layer.
- Melt the chocolate chips until smooth, then gently drizzle over the marshmallow layer.
- Sprinkle the remaining chopped S’mOREOs over the top and add mini marshmallows or mini chocolate chips if using.
- Refrigerate for 2–3 hours until set, then slice into bars and serve chilled.
FAQ
Can I use regular Oreos instead of S’mOREOs?
Yes, just add a handful of mini marshmallows to keep that s’mores flavor.
Do these need to stay refrigerated?
Yes, the cream layer needs to stay chilled so the bars hold their shape.
Can I make these ahead of time?
Yes, they’re even better after a few hours in the fridge or overnight.
How do I get clean slices?
Use a sharp knife and wipe it between cuts for smoother edges.
Can I freeze them?
You can, just let them thaw slightly before serving so the texture softens.
Sprinkle of Fun
Make these on a warm summer night, then bring them out to the patio for a game of cards and enjoy that cool, fudgy treat between rounds.
Suggested Recipes
If you like S’mOREO Brownie Icebox Bars, then you’ll love the recipes below.
get access to my weekly recipe updates!
