These S’mores Cereal Bars are a nostalgic treat with a delightful twist, combining the classic flavors of gooey marshmallows, rich chocolate, and crunchy graham crackers. Ready in just 15 minutes, they’re perfect for satisfying your sweet tooth without spending hours in the kitchen. Each bite offers a heavenly mix of chewy, crispy, and creamy textures that will transport you straight to a cozy campfire night.
Packed with decadent chocolate and toasted marshmallow goodness, these bars are as fun to make as they are to eat. Whether you’re whipping them up for a party or a quick snack, their irresistible flavor and easy prep make them a crowd-pleaser. Plus, they’re portioned into 20 bars, so you can share—or keep them all to yourself!
What You’ll Need for S’mores Cereal Bars
- 5 Tablespoons salted butter (plus extra for greasing the pan)
- 2 cups (340 g) milk chocolate chips (or semi-sweet for a less sweet option)
- ⅓ cup (80 ml) light corn syrup (or honey as a substitute)
- 1 teaspoon vanilla extract
- 7 cups (300 g) graham cracker cereal
- 15 oz (425 g) mini marshmallows (1 ½ bags; use 1 full bag plus about 2 cups from the second bag)
How to Make S’mores Cereal Bars
- Prepare the pan: Lightly grease the sides and bottom of a 9×13 baking dish with butter. Set aside.
- Melt the base: In a large pot, combine 5 Tablespoons salted butter, 2 cups milk chocolate chips, and ⅓ cup light corn syrup over low heat. Stir frequently until the chocolate and butter are melted and the mixture is smooth.
- Add marshmallows: Stir in 10 oz (280 g) mini marshmallows and 1 teaspoon vanilla extract. Continue stirring frequently until the marshmallows are completely melted. Keep the heat low to avoid burning.
- Mix in cereal and remaining marshmallows: Add 7 cups graham cracker cereal and the remaining 5 oz (140 g) mini marshmallows. Stir until everything is evenly coated with the chocolate mixture.
- Press into the pan: Transfer the mixture to the prepared baking dish. Use a spatula to press and smooth the surface. If you reserved any marshmallows, sprinkle them on top now.
- Cool and slice: Allow the bars to cool completely at room temperature. Once set, slice into squares and serve.
Perfect Pairings: Serving Suggestions
These S’mores Cereal Bars are delicious on their own, but you can elevate them with a drizzle of melted chocolate or a sprinkle of crushed graham crackers on top. For a fun twist, serve them with a scoop of vanilla ice cream or a dollop of whipped cream. They’re also great alongside a cold glass of milk or a warm cup of hot cocoa for the ultimate treat!
Keep It Fresh: Storage Tips
Store your S’mores Cereal Bars in an airtight container at room temperature for up to 3 days. If you prefer a firmer texture, refrigerate them for up to a week. For longer storage, wrap individual bars in plastic wrap and freeze for up to 2 months—just let them thaw at room temperature before enjoying.
Mix It Up: Recipe Variations
Feel free to get creative with this recipe! Swap the milk chocolate chips for dark or white chocolate for a different flavor profile. Add a handful of chopped nuts or dried fruit for extra texture. You can even replace the graham cracker cereal with crushed graham crackers or another cereal like Rice Krispies for a unique twist.
Quick Tips for Success
To save time, measure out all your ingredients before starting. Use a non-stick pot to make cleanup easier, and keep the heat low to prevent the chocolate from burning. If the mixture feels too sticky, lightly grease your spatula with butter when spreading it into the pan. And don’t forget to let the bars cool completely before slicing for clean, even pieces!
S’mores Cereal Bars
Ingredients
- 5 Tablespoons salted butter plus additional for greasing pan
- 2 cups milk chocolate chips (340 g)
- ⅓ cup light corn syrup (80 ml)
- 1 teaspoon vanilla extract
- 7 cups graham cracker cereal (300 g)
- 15 oz mini marshmallows (425 g) This is 1 ½ 10 oz bags, you’ll need one full bag, then about 2 cups from the second bag
Instructions
- Lightly grease the sides and bottoms of a 9×13 baking dish with butter. Set aside.
- In a large pot, combine butter, chocolate chips, and corn syrup over low heat. Stir frequently until chocolate and butter are melted and mixture is smooth.
- Add 10 oz (280g) mini marshmallows and vanilla extract and stir frequently until marshmallows are melted (keep your stovetop heat low).
- Add graham cracker cereal and remaining 5 oz (140g) mini marshmallows¹ and stir until completely coated with chocolate mixture.
- Spread into prepared baking dish and smooth surface with a spatula. If you reserved any mini marshmallows, sprinkle them over the surface of the cereal bars now.
- Allow to cool then slice and serve.