Biscoff Marshmallow Chocolate Bars
If you’re looking for a dessert that combines the rich, caramel flavor of Biscoff spread with gooey marshmallows and decadent chocolate, then you’re in for a treat! These Biscoff Marshmallow Chocolate Bars are not only easy to whip up but also incredibly satisfying, making them the perfect sweet indulgence for any occasion. Whether you’re hosting a gathering or simply treating yourself, these bars will surely impress.
Why This Recipe Is Reliable

This recipe for Biscoff Marshmallow Chocolate Bars stands out because of its straightforward method and minimal ingredients, making it accessible to bakers of all skill levels. The combination of creamy Biscoff spread, fluffy marshmallows, and rich semi-sweet chocolate creates a delightful taste and texture that is hard to resist. Plus, the bars can be made in just a few simple steps, ensuring that you won’t spend all day in the kitchen. They’re a crowd-pleaser that will leave everyone asking for seconds!
Ingredient Checklist
- 1 cup semi-sweet chocolate chips, for melting
- ½ cup Creamy Biscoff Spread or Cookie Butter Spread (peanut butter may be substituted, although the flavor will not be the same)
- 3 cups mini-marshmallows
- 1 cup Biscoff cookies (about 10 to 12 cookies) or Bistro Biscuits, or substitute with 2 full-size sheets chopped cinnamon graham crackers
- ½ cup semi-sweet chocolate chips, for sprinkling (white chocolate, butterscotch, peanut butter, or cinnamon chips may be substituted)
Kitchen Gear Checklist
- 9×9-inch baking pan – for setting the bars
- Mixing bowls – for combining ingredients
- Microwave-safe bowl – for melting chocolate
- Spatula – for mixing and spreading
- Measuring cups and spoons – for accurate ingredient measurements
Biscoff Marshmallow Chocolate Bars in Steps

Step 1: Prepare Your Baking Pan
Start by lining a 9×9-inch baking pan with parchment paper, allowing some overhang on the sides for easy removal later. This will help you lift the bars out once they are set.
Step 2: Melt the Chocolate
In a microwave-safe bowl, combine the 1 cup of semi-sweet chocolate chips and melt them in the microwave in 30-second intervals, stirring in between until the chocolate is smooth and fully melted.
Step 3: Mix in Biscoff Spread
Once melted, stir in the ½ cup of Biscoff Spread into the chocolate until fully combined. This mixture should be creamy and luscious.
Step 4: Add the Marshmallows
Fold in the 3 cups of mini-marshmallows gently into the chocolate-Biscoff mixture. Make sure the marshmallows are well coated.
Step 5: Incorporate the Cookies
Next, crumble the 1 cup of Biscoff cookies and fold them into the mixture. If using graham crackers, chop them into small pieces and add them in as well. This will add a delightful crunch to your bars.
Step 6: Transfer to Baking Pan
Pour the mixture into your prepared baking pan, spreading it evenly with a spatula. Press it down gently to ensure it holds together.
Step 7: Sprinkle with Extra Chocolate
Sprinkle the ½ cup of semi-sweet chocolate chips (or your choice of chips) evenly over the top. This adds an extra layer of chocolatey goodness.
Step 8: Chill and Set
Place the baking pan in the refrigerator for about 2 hours or until the bars are set and firm. This step is crucial for achieving the right texture.
Step 9: Cut and Serve
Once set, lift the bars out of the pan using the parchment overhang. Cut them into squares and serve. Enjoy your delicious Biscoff Marshmallow Chocolate Bars with friends and family!
Quick Replacement Ideas

- If you can’t find Biscoff spread, use your favorite cookie butter or peanut butter for a different flavor.
- For a gluten-free option, use gluten-free cookies or graham crackers.
- Swap out the semi-sweet chocolate chips for dark chocolate chips for a richer taste.
- Try adding chopped nuts or dried fruit for added texture and flavor.
What I Learned Testing
- Melting chocolate can be finicky; always use a microwave-safe bowl and heat it gradually.
- Using a mix of cookies and marshmallows creates varied textures that make each bite exciting.
- Chilling the bars is essential for them to hold their shape; don’t skip this step!
- These bars are highly customizable; feel free to experiment with different types of chocolate or spreads.
Save It for Later
If you find yourself loving these Biscoff Marshmallow Chocolate Bars, be sure to save this recipe for future cravings! They can be made ahead of time and stored in an airtight container for up to a week—though I doubt they will last that long.
Ask the Chef
Can I use regular marshmallows instead of mini-marshmallows?
Yes, you can use regular marshmallows, but you will need to cut them into smaller pieces to ensure they mix well with the chocolate and Biscoff spread.
How can I make these bars more chocolatey?
To increase the chocolate flavor, consider using dark chocolate chips for melting and adding additional chocolate chips on top when sprinkling.
Can I add other flavors to this recipe?
Absolutely! You can add flavors by incorporating extracts like vanilla or almond, or even by mixing in some crushed peppermint candies during the holidays.
What should I do if the bars are too sticky?
If the mixture is too sticky, it might be due to not enough chocolate or Biscoff spread. You can add a little more melted chocolate to help bind it together without compromising the flavor.
More from the Kitchen
Final Bite
These Biscoff Marshmallow Chocolate Bars are a delightful treat that brings together the best of sweet and crunchy textures with a flavor profile that will leave you wanting more. Perfect for sharing or enjoying all by yourself, this recipe is sure to become a staple in your dessert repertoire. So gather your ingredients, treat yourself to some sweet fun, and get ready to indulge in a deliciously unique experience!

Biscoff Marshmallow Chocolate Bars
Ingredients
Equipment
Method
- Start by lining a 9x9-inch baking pan with parchment paper, allowing some overhang on the sides for easy removal later.
- In a microwave-safe bowl, combine the 1 cup of semi-sweet chocolate chips and melt them in the microwave in 30-second intervals, stirring in between until the chocolate is smooth and fully melted.
- Once melted, stir in the ½ cup of Biscoff Spread into the chocolate until fully combined.
- Fold in the 3 cups of mini-marshmallows gently into the chocolate-Biscoff mixture.
- Next, crumble the 1 cup of Biscoff cookies and fold them into the mixture.
- Pour the mixture into your prepared baking pan, spreading it evenly with a spatula.
- Sprinkle the ½ cup of semi-sweet chocolate chips evenly over the top.
- Place the baking pan in the refrigerator for about 2 hours or until the bars are set and firm.
- Once set, lift the bars out of the pan using the parchment overhang. Cut them into squares and serve.
Notes
- If you can’t find Biscoff spread, use your favorite cookie butter or peanut butter for a different flavor.
- For a gluten-free option, use gluten-free cookies or graham crackers.
- Try adding chopped nuts or dried fruit for added texture and flavor.
