Name: Cookie Butter Cold Brew (Dunkin Copycat)
Prep time: 5 min
Total time: 5 min
Yield: 1
Ingredients: 1 cup cold brew coffee; 2 tablespoons cookie butter syrup; 1 cup ice cubes; 3 tablespoons heavy cream; 1 tablespoon whole milk; 1 tablespoon cookie butter syrup (for cold foam); 1 Biscoff cookie, crushed

This Dunkin-inspired cookie butter cold brew combines smooth cold brew coffee with homemade cookie butter syrup and a thick layer of creamy cookie butter cold foam. Finished with crushed Biscoff cookies, it's an easy coffee shop style drink you can make at home whenever the craving hits.

A Dunkin' Donuts copycat cookie butter cold brew coffee with layers of cold brew and ice topped with creamy cookie butter cold foam, crushed Biscoff cookies, and whole Lotus Biscoff cookies on the side.

This Dunkin-inspired cookie butter cold brew is everything I want in a fall iced coffee. Inspired by Dunkin’s seasonal favorite, it starts with smooth cold brew sweetened with homemade cookie butter syrup, then gets topped with a creamy cookie butter cold foam and a sprinkle of crushed Biscoff cookies. It’s cool, creamy, and full of that warm spiced cookie flavor that somehow tastes even better over ice.

The first sip is all about the layers. You get the silky cookie butter cold foam first, followed by bold cold brew with sweet caramelized notes from the syrup. The crushed Biscoff cookies on top add just a little crunch and make it feel like something you’d order at your favorite coffee shop.

I like making this version with my homemade Cookie Butter Syrup because one batch makes enough for plenty of coffees. Once you’ve made the syrup, putting the drink together only takes a few minutes.

Skip the straw on this one. That way every sip has a little bit of everything.

A four-photo collage showing homemade Dunkin copycat cookie butter cold brew, including crushed Biscoff cookie topping, the key ingredients, cookie butter cold foam being poured over iced coffee, and the finished drink.

Why You’ll Love This Cookie Butter Cold Brew

The homemade syrup makes all the difference. It’s made with real Biscoff spread and brown sugar, giving the coffee real cookie butter flavor.
It feels like a coffee shop treat. Between the creamy cold foam and the crushed Biscoff cookies on top, it looks just as good as it tastes. If you’re a fan of coffee shop copycats, my Pumpkin Cream Cold Brew is another fall favorite.
One batch goes a long way. The syrup makes enough for several coffees, so after a few minutes of prep you’ll have everything you need for cookie butter cold brew all week.
Easy to make your own. Prefer stronger coffee? Want it a little sweeter? It’s easy to tweak each glass exactly how you like it.

An angled overhead view of homemade cookie butter cold brew topped with thick cookie butter cold foam and crushed Biscoff cookies, with whole and crushed Lotus Biscoff cookies surrounding the glass.

Sweet Steep Tip
Make the cookie butter syrup a day ahead if you can. Cold syrup helps the cold foam whip up much faster and keeps it thick enough to float on top of the coffee.

Ingredients for Cookie Butter Cold Brew

You only need a few simple ingredients to recreate this seasonal favorite.

Cold brew coffee
Cookie butter syrup
Heavy cream
Whole milk
Ice cubes
Biscoff cookie

An overhead photo of the ingredients needed to make a Dunkin copycat cookie butter cold brew, including cookie butter syrup, cold brew coffee, heavy cream, milk, ice, and Biscoff cookies.

Ingredient Notes & Substitutions

Cold Brew Coffee
I usually make mine using Starbucks bottled cold brew concentrate mixed with an equal amount of filtered water for regular-strength coffee. Feel free to use your favorite bottled cold brew or homemade cold brew instead.

Cookie Butter Syrup
I highly recommend using my homemade Biscoff Cookie Butter Syrup. It’s made with Biscoff cookie butter, brown sugar, water, and a pinch of salt, giving it even more of those deep caramelized cookie notes. It only takes about five minutes to make.

Store-bought cookie butter syrup works too if you already have a favorite brand. Just be sure it’s completely cooled before using it in the cold foam.

Heavy Cream
Heavy cream gives the cold foam its rich texture. Since we’re making a pourable foam instead of whipped cream, it gets mixed with a little whole milk.

Whole Milk
Adding a splash of whole milk keeps the cold foam light enough to slowly cascade over the coffee instead of sitting on top like whipped cream.

Biscoff Cookies
These get crushed and sprinkled over the cold foam. It’s a simple topping, but it really finishes the drink and adds a little crunch with every sip.

A glass of cookie butter cold brew with creamy cookie butter cold foam beside a jar of Biscoff cookie butter spread and a small dish of Lotus Biscoff cookies.

Why Homemade Cookie Butter Syrup Makes a Difference

There are bottled cookie butter syrups available, but I keep coming back to the homemade version because it tastes more like actual Biscoff cookies.

Using real cookie butter spread along with brown sugar gives the syrup deeper caramelized notes and a fuller speculoos flavor. Since one batch makes enough syrup for several drinks, it’s worth spending the extra five minutes to make it.

I usually keep a jar of syrup in the refrigerator alongside a bottle of cold brew. It makes afternoon iced coffees almost too easy.

An overhead view of cookie butter cold brew topped with creamy cookie butter cold foam, crushed Biscoff cookies, and a whole Lotus Biscoff cookie resting on the foam.

If you love Biscoff flavors, try my Cookie Butter Latte for a cozy hot coffee or my Cookie Butter Coffee Creamer to bring the same flavor to your morning cup every day.

How to Make Cookie Butter Cold Brew

This recipe makes one 16-ounce drink, about the same size as a Dunkin small or a Starbucks grande.

Detailed recipe and instructions are in recipe card at bottom of post.

About 5 minutes before you start, place the cup you’ll use for frothing into the freezer. I also like to measure the heavy cream, milk, and cookie butter syrup into the cup first, then let the whole thing chill. This helps the cold foam thicken properly.
Combine the heavy cream, whole milk, and 1 tablespoon of the cookie butter syrup in the chilled cup. Using a hand frother, froth until the mixture has the consistency of melted ice cream. It should be thick enough to float on top of the coffee but still pour easily.
Pour 2 tablespoons of cookie butter syrup into a 16-ounce glass. Add the cold brew coffee and stir until the syrup is fully mixed in.
Fill the glass with ice, leaving about ½ inch of space at the top for the cold foam.
Slowly pour the cookie butter cold foam over the coffee.
Place the Biscoff cookie in a small zip-top bag and gently crush it with the back of a spoon or a rolling pin. Sprinkle the crumbs over the cold foam and serve immediately.

A nine-photo collage showing how to make homemade cookie butter cold brew, including preparing the cookie butter cold foam, mixing the cold brew, adding ice, pouring on the cold foam, and topping with crushed Biscoff cookies.

How to Make the Best Cookie Butter Cold Foam

Cold foam isn’t difficult to make, but there are a few little tricks that help it turn out thick and creamy instead of flat. These are the ones that make the biggest difference for me.

Start with everything cold

I always chill the cup I’m using for frothing along with the heavy cream, milk, and syrup for about 5 minutes before I begin. I used to skip this step, thinking it wouldn’t matter. It definitely does.

Cold ingredients foam much better. It’s the same idea as homemade whipped cream. If the cream starts out warm, it takes longer to thicken and usually doesn’t get as fluffy.

Froth near the surface first

When using a handheld milk frother, start with the whisk just below the surface of the cream. This pulls air into the mixture and gives the cold foam more volume.

Once it starts to thicken, lower the frother farther into the cup to finish mixing everything together.

Aim for melted ice cream

You’re looking for the consistency of melted ice cream. Thick enough to sit on top of the coffee, but still pourable.

If your cold foam is too thin

Don’t worry. It happens.

Usually the ingredients just got a little too warm. Pop the cup into the freezer for another couple of minutes, then give it another quick froth. That almost always fixes it.

Making several drinks?

This recipe makes enough cold foam for one drink, but it’s easy to prep a larger batch.

Mix the heavy cream, milk, and cookie butter syrup together and store it in a covered jar in the refrigerator. When you’re ready for a coffee, pour out what you need and froth a fresh serving. It only takes about 30 seconds.

A thick stream of homemade cookie butter cold foam being poured over a glass of iced cookie butter cold brew coffee.

A glass of iced cookie butter cold brew topped with a thick layer of creamy cookie butter cold foam floating over the coffee.

Recipe Tips

Make the cookie butter syrup ahead of time so it’s well chilled before making the cold foam. Warm syrup makes it harder for the foam to thicken.
Adjust the sweetness by adding a little more or less cookie butter syrup to the coffee.
Freshly crush the Biscoff cookie just before serving for the best crunch.
I make my cold brew with equal parts concentrate and water, but if you like a bolder coffee flavor, simply use a little less water.
Skip the straw so you get a little coffee, cold foam, and cookie crumbs in every sip.
Serve immediately after adding the cold foam. It slowly blends into the coffee over time, which still tastes great, but it’s prettiest right after pouring.

A homemade Dunkin copycat cookie butter cold brew topped with cookie butter cold foam, with two Lotus Biscoff cookies in front of the glass and a small dish of crushed cookies in the background.

Frequently Asked Questions

Can I use store-bought cookie butter syrup?
Absolutely. Homemade gives the richest Biscoff flavor, but any cookie butter syrup you enjoy will work.

Can I make this with regular iced coffee?
Yes. Cold brew has a smoother, less acidic flavor, but chilled brewed coffee works in a pinch.

What if I don’t have a handheld frother?
A small electric frother works best, but you can also shake the cold foam ingredients vigorously in a tightly sealed mason jar until slightly thickened.

Can I make the cold foam ahead of time?
It’s best to froth it just before serving. If you’d like to prep ahead, mix the cream, milk, and syrup together and refrigerate. Froth only the amount you need when you’re ready to make your coffee.

Can I use half-and-half instead of heavy cream?
You can, but the cold foam won’t be quite as thick or creamy. Heavy cream gives the closest texture to coffee shop cold foam.

More Cookie Butter Coffee Recipes

If cookie butter has earned a permanent spot in your coffee bar like it has in mine, here are a few more recipes to try next.

Cookie Butter Cold Brew (Dunkin Copycat)

Yield: 1 drink (16 oz)

Prep Time: 5 minutes

Total Time: 5 minutes

This homemade cookie butter cold brew combines smooth cold brew coffee with rich cookie butter syrup, creamy cookie butter cold foam, and a sprinkle of crushed Biscoff cookies for an easy coffee shop-inspired drink.

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Ingredients

1 cup cold brew coffee
2 tablespoons cookie butter syrup
1 cup ice cubes
3 tablespoons heavy cream
1 tablespoon whole milk
1 tablespoon cookie butter syrup (for cold foam)
1 Biscoff cookie, crushed

Instructions

Chill the cup for the cold foam along with the heavy cream, milk, and syrup for about 5 minutes.
Combine the heavy cream, milk, and 1 tablespoon cookie butter syrup in the chilled cup. Froth until thick but pourable.
Add 2 tablespoons cookie butter syrup to a 16-ounce glass.
Pour in the cold brew coffee and stir.
Fill the glass with ice, leaving about ½ inch of space at the top.
Slowly pour the cookie butter cold foam over the coffee.
Sprinkle with crushed Biscoff cookies and serve immediately.

Notes

Homemade cookie butter syrup gives the most authentic flavor.

Chill the syrup before making the cold foam.

Adjust the sweetness by adding more or less syrup.

Freshly crushed Biscoff cookies give the best topping.

Cookie Butter Cold Brew (Dunkin Copycat)

Why You’ll Love This Cookie Butter Cold Brew