Biscoff Marshmallow Treats

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If you’ve been following me for a while, you know I’m obsessed with Rice Krispie Treats. I’ve made Ube Rice Krispie Treats, Pandan Rice Krispie Treats, and even did a whole 3 Must Try Rice Krispie Treats roundup. But these Biscoff marshmallow treats might just be my favorite version yet. The idea hit me one day when I was snacking on Lotus Biscoff cookies (as one does) and thought, what if I just… swapped the Rice Krispies for crumbled Biscoff? Turns out, that’s all it takes to make something truly next level.

The whole recipe is basically the same process you already know from making classic marshmallow treats, but instead of cereal, you’re folding in those warm, caramel-y, cinnamon-spiced cookie pieces. Then you drizzle the whole thing with melted dark chocolate because why not. It takes maybe 15 minutes, zero baking required, and the result is this chewy, crunchy, chocolate-drizzled situation that disappears way too fast.

If you ever want to flip that script, these One-Pan Baked Rice Krispies Treats go into a 350F oven and come out with a golden, caramelized top that the stovetop method just can’t pull off.

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It’s also part of my 12 Easy Rice Krispies Treats Variations, if you want more delicious inspo.

What Makes These Biscoff Marshmallow Treats So Good

If you’ve never had a Biscoff cookie before, first of all, where have you been? They’re those thin, caramelized Belgian cookies you get on airplanes, and they have this warm brown sugar and cinnamon flavor that’s completely unique. When you break them into pieces and fold them into melted marshmallows, the cookies soften just slightly at the edges while keeping their crunch in the center. Every bite has this perfect chewy-crunchy contrast that regular Rice Krispies Treats can’t really match.

And then there’s the dark chocolate drizzle. It adds a rich, slightly bitter note that balances out the sweetness of the marshmallows and cookies. If you’ve tried my Chocolate Covered Mandarin Oranges, you already know how much a little melted chocolate can transform a simple treat. Same energy here.

If you want to lean even harder into the chocolate-and-minimal-effort combo, these 3-Ingredient Nutella Brownies are just Nutella, eggs, and chocolate chips, and the result is a fudgy, gluten-free brownie that goes SO fast.

Tips for Making the Best Biscoff Marshmallow Treats

1. Break the Cookies, Don’t Crush Them

You want pieces, not dust. Break the Biscoff cookies into roughly quarter-sized chunks so you get actual cookie texture in every bite. If you crush them too fine, the mixture will be dense and pasty instead of having that satisfying crunch. I like to just break them by hand into a bowl, no food processor needed.

2. Keep the Heat Low When Melting Marshmallows

Medium-low is the sweet spot. If the heat is too high, the marshmallows will start to brown and get stiff before you even add the cookies. You want them just melted and gooey so they coat everything evenly. Stir continuously once you add them to the butter, and take the pot off the heat before you fold in the cookie pieces.

3. Use Parchment Paper for Easy Removal

Lining your pan with parchment paper is a total game changer. It makes it super easy to lift the whole block out after it sets, and cleanup is basically nonexistent. I also use a small piece of parchment on top and press down with a measuring cup to flatten everything evenly without it sticking to my hands.

4. Let Them Set Before Cutting

I know it’s tempting to dig in immediately, but give them at least 5-10 minutes to firm up. If you try cutting them while they’re still warm, they’ll squish and lose their shape. They don’t need to be rock hard, just set enough to hold together when you slice them.

5. Drizzle the Chocolate After Cutting

Melt your dark chocolate in the microwave in 30-second intervals and stir between each one so it doesn’t seize up. I pour the melted chocolate into a ziploc bag, snip a tiny corner off, and use it like a piping bag. Drizzle over the cut pieces rather than the whole block, so each piece looks clean and evenly decorated.

Storage and Leftovers

These Biscoff marshmallow treats keep really well at room temperature in an airtight container for up to 3 days. I wouldn’t refrigerate them because the marshmallow gets tough and loses that chewy texture. If you’re making them for a party or potluck, they travel great and hold their shape well, which makes them perfect for bringing somewhere. If you’re into easy, crowd-pleasing desserts, you should also check out my Frozen Berry Yogurt Clusters for another no-bake treat that people go crazy over.

Ingredients

• 3 tbsp butter
• 10 oz marshmallows (usually 1 bag)
• 6 cups Biscoff cookies (broken into small pieces)
• 5 oz dark chocolate melting wafers

Equipment

• Baking Pan
• Sauce Pan
• Cutting Board
• Piping Bag
• Measuring Cups
• Mixing Bowls
• Parchment Paper

Instructions

1. Break the Biscoff cookies into small pieces in a bowl.
2. Melt the butter in a large pot over medium-low heat, then pour in the marshmallows.
3. Continuously stir to mix in the butter and evenly melt the marshmallows.
4. Take the pot off the heat, pour in the Biscoff cookie pieces, and mix until they’re evenly coated.
5. Line a small baking pan with parchment paper and transfer the mixture over. Use a small piece of parchment paper and a measuring cup to compress and flatten it. Let it cool for 5-10 minutes.
6. Place the block onto a cutting board and cut to your desired size.
7. Melt the dark chocolate wafers in a microwave-safe bowl in 30-second intervals, stirring in between, until smooth.
8. Spoon the melted chocolate into a ziploc bag, snip a tiny corner off, and drizzle onto each piece.

These are also super fun to make with kids since there’s no oven involved and the whole process is basically just melting, mixing, and pressing. If your crew likes Biscoff (and let’s be real, who doesn’t), they’re going to lose it over these.

And if you try dunking these in milk, please report back because I have a feeling that would be incredible.

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