Extra-Marshmallow Chocolate Peanut Butter Rice Krispies Bars
If you’re looking for a treat that’s both nostalgic and decadent, these Extra-Marshmallow Chocolate Peanut Butter Rice Krispies Bars are exactly what you need. They bring together the classic flavors of chocolate and peanut butter with a gooey marshmallow twist that will leave you reaching for more. Perfect for sharing at parties or enjoying as a late-night snack, this recipe is bound to become a favorite in your household!
Why I Love This Recipe

There’s something undeniably comforting about Rice Krispies treats. They remind me of childhood days spent in the kitchen, stirring up gooey marshmallow goodness and indulging in sweet, crunchy bites. This Extra-Marshmallow Chocolate Peanut Butter Rice Krispies Bars recipe takes that classic treat and elevates it to a whole new level. The addition of creamy peanut butter and extra marshmallows creates a delightful texture and flavor explosion that you simply can’t resist. Plus, they are incredibly easy to make!
The Ingredient Lineup
To whip up these delicious bars, you’ll need a few simple ingredients that blend perfectly together. Here’s what you will need:
- 1 cup unsalted butter – This adds richness and helps bind everything together.
- 24 ounces semi-sweet chocolate chips – The star of the show, providing that luscious chocolatey flavor.
- 50 ounces mini marshmallows, divided – The marshmallows give the bars their signature gooeyness.
- 1 cup creamy peanut butter – Adds a nutty flavor and smooth texture. Use a classic brand for the best results!
- 12 cups Rice Krispies cereal – The crunch factor that holds everything together. Make sure to use the original variety!
Essential Tools for Success
Before you dive into making these bars, gather the following tools to make your life easier:
- Large saucepan – For melting the butter and chocolate.
- Wooden spoon or spatula – To stir and combine the ingredients.
- 9×13 inch baking dish – The perfect size for setting your bars.
- Parchment paper – To line the baking dish for easy removal.
- Measuring cups – Precision is key in baking!
Extra-Marshmallow Chocolate Peanut Butter Rice Krispies Bars — Do This Next

Follow these simple steps to create your delicious Extra-Marshmallow Chocolate Peanut Butter Rice Krispies Bars:
Step 1: Prepare Your Baking Dish
Start by lining your 9×13 inch baking dish with parchment paper. This will help you easily lift the bars out once they’ve set.
Step 2: Melt the Butter and Chocolate
In a large saucepan over medium heat, melt the unsalted butter. Once melted, add in the semi-sweet chocolate chips. Stir continuously until the mixture is smooth and well combined.
Step 3: Add the Marshmallows
Take 40 ounces of the mini marshmallows and add them to the melted chocolate and butter mixture. Stir until the marshmallows are fully melted and incorporated, creating a gooey chocolate-marshmallow mixture.
Step 4: Mix in the Peanut Butter
Remove the saucepan from heat. Add the creamy peanut butter to the chocolate-marshmallow mixture and stir until everything is well combined.
Step 5: Incorporate the Rice Krispies
Once the peanut butter is fully mixed in, gently fold in the Rice Krispies cereal. Be careful not to crush the cereal; you want to maintain that delightful crunch!
Step 6: Add Extra Marshmallows
Finally, fold in the remaining 10 ounces of mini marshmallows for that extra gooey texture.
Step 7: Transfer to Baking Dish
Pour the mixture into the prepared baking dish. Use a spatula to spread it evenly across the dish, pressing down gently to ensure it holds together.
Step 8: Let It Set
Allow the bars to cool at room temperature. For quicker results, you can place them in the refrigerator for about 30 minutes until they are firm.
Make It Year-Round

These Extra-Marshmallow Chocolate Peanut Butter Rice Krispies Bars are not just for special occasions! Here are a few ideas to enjoy them all year round:
- Add festive sprinkles for birthdays or celebrations.
- Drizzle with white chocolate for a gourmet touch.
- Incorporate nuts or dried fruit for a different texture.
- Serve them as a fun dessert during movie nights or game days.
Pro Tips & Notes
- For an even richer flavor, use dark chocolate chips instead of semi-sweet.
- Make sure to measure your Rice Krispies carefully to maintain the right balance.
- Feel free to experiment with flavored peanut butter, like chocolate or honey.
- These bars can be cut into smaller pieces for bite-sized snacks!
Storing Tips & Timelines
To keep your bars fresh and delicious:
- Store the bars in an airtight container at room temperature for up to one week.
- If you want to keep them longer, consider refrigerating them, where they can last for up to two weeks.
- For longer storage, freeze the bars wrapped in plastic wrap and then foil; they can keep for up to three months.
Troubleshooting Q&A
What if my bars are too sticky?
If your bars are sticky, it’s likely that the marshmallow mixture wasn’t fully melted or incorporated. Make sure to stir well until everything is smooth. If they still seem too sticky, try adding a bit more Rice Krispies to balance the moisture.
Why are my bars too crumbly?
Crumbly bars can be a result of using too much cereal or not enough marshmallows and chocolate. Ensure you follow the measurements closely and consider adding a touch more melted chocolate or marshmallows to help bind them together.
Can I use regular peanut butter?
Yes! While creamy peanut butter works best for a smooth texture, regular peanut butter can also be used. Just be aware that it may alter the texture slightly, depending on how chunky it is.
How do I cut the bars without them falling apart?
To cut the bars neatly, let them cool completely and set. Use a sharp knife that has been lightly greased with cooking spray to help make clean cuts without sticking.
Serve & Enjoy
Now that you’ve created these Extra-Marshmallow Chocolate Peanut Butter Rice Krispies Bars, it’s time to serve and enjoy! Cut them into squares or rectangles and present them on a beautiful platter. You can even dust them with a touch of powdered sugar or drizzle some extra chocolate on top for a stunning presentation. Whether at a party, a family gathering, or a cozy night at home, these bars are sure to be a hit!
These Extra-Marshmallow Chocolate Peanut Butter Rice Krispies Bars are not just a delightful treat; they’re a sweet reminder of the joy of baking and sharing with loved ones. With their rich flavors and satisfying textures, you’ll find yourself making them again and again. Enjoy every gooey, crunchy, chocolatey bite!

Extra-Marshmallow Chocolate Peanut Butter Rice Krispies Bars
Ingredients
Equipment
Method
- Start by lining your 9x13 inch baking dish with parchment paper. This will help you easily lift the bars out once they’ve set.
- In a large saucepan over medium heat, melt the unsalted butter. Once melted, add in the semi-sweet chocolate chips. Stir continuously until the mixture is smooth and well combined.
- Take 40 ounces of the mini marshmallows and add them to the melted chocolate and butter mixture. Stir until the marshmallows are fully melted and incorporated, creating a gooey chocolate-marshmallow mixture.
- Remove the saucepan from heat. Add the creamy peanut butter to the chocolate-marshmallow mixture and stir until everything is well combined.
- Once the peanut butter is fully mixed in, gently fold in the Rice Krispies cereal. Be careful not to crush the cereal; you want to maintain that delightful crunch!
- Finally, fold in the remaining 10 ounces of mini marshmallows for that extra gooey texture.
- Pour the mixture into the prepared baking dish. Use a spatula to spread it evenly across the dish, pressing down gently to ensure it holds together.
- Allow the bars to cool at room temperature. For quicker results, you can place them in the refrigerator for about 30 minutes until they are firm.
Notes
- For an even richer flavor, use dark chocolate chips instead of semi-sweet.
- Make sure to measure your Rice Krispies carefully to maintain the right balance.
- Feel free to experiment with flavored peanut butter, like chocolate or honey.
- These bars can be cut into smaller pieces for bite-sized snacks!
