Dunkin’ Donuts Iced Coffee (Easy Copycat Recipe)

Dunkin’ Donuts iced coffee is that sweet, creamy, coffee-shop drink you can have ready in about 5 minutes without leaving the house. This copycat version nails the flavor using strong brewed coffee, your choice of milk, and Dunkin’s classic flavor swirls.

Making it at home saves a real amount of money over time, and you can tweak the sweetness exactly to your taste.

Why I Love This Recipe

The coffee is strong enough that it does not taste watered-down once the ice goes in, which is the thing most homemade iced coffees get wrong.

You control the sugar level here, so it can be as lightly sweetened or as dessert-sweet as you want. That flexibility keeps it in regular rotation for me.

It also takes less time to make than a drive-through run.

Recipe Ingredients

• 1 cup strong brewed coffee – Brew it double-strength so the ice does not dilute the flavor; a dark roast works well
• 1 cup ice – Standard ice cubes; crushed ice melts faster and waters it down quicker
• 3 tbsp flavored liquid coffee syrup – Use a store-bought French vanilla, caramel, or hazelnut syrup to mimic Dunkin’s flavor swirls
• 1/4 cup whole milk – Whole milk gives the closest texture to Dunkin’s; see swaps below
• 1 tsp granulated sugar – Optional, only if you want it sweeter than the syrup alone provides

Variations / Substitutions

• Oat milk – Swaps in 1:1 and keeps the drink creamy without any dairy flavor.
• Half-and-half – Richer and closer to the original “extra extra” style with a noticeably thicker texture.
• Sugar-free syrup – Works perfectly; Torani and Jordan’s Skinny Syrups both come in the classic flavors.
• Espresso instead of brewed coffee – Use 2 shots (about 2 oz) topped up with cold water to 1 cup for a stronger, slightly more bitter base.
• Coconut milk – Adds a light sweetness and makes the drink naturally dairy-free with a tropical undertone.
• Cold brew concentrate – Substitute 1/2 cup concentrate plus 1/2 cup cold water for an even smoother, less acidic result.

If you enjoy this, the Dunkin’ Donuts Caramel Macchiato Copycat Recipe is worth trying next.

How To Make Dunkin’ Donuts Iced Coffee

Step 1: Brew and Cool the Coffee

Brew 1 cup of coffee at double strength, using twice the amount of grounds you normally would for that volume. Let it cool to room temperature on the counter for about 10 minutes, or speed it up by pouring it into a wide bowl so more surface area is exposed.

Cooling it before adding ice matters. Pouring hot coffee straight onto ice melts it immediately and dilutes the drink before you take the first sip.

Step 2: Sweeten the Coffee

Add the 3 tbsp flavored liquid coffee syrup to the cooled coffee and stir for about 15 seconds until it is fully mixed in. If you want extra sweetness, stir in the 1 tsp granulated sugar at this point too, while the coffee is still slightly warm so the sugar dissolves cleanly.

The syrup will not blend as evenly into cold liquid, so this is the right moment to do it.

Step 3: Fill the Glass With Ice

Add the 1 cup of ice to a tall 16 oz glass. Pour the sweetened coffee over the ice slowly so it hits the ice first rather than the side of the glass, which keeps the drink colder from the start.

The glass should be about two-thirds full at this point, with visible space for the milk.

Step 4: Pour In the Milk and Serve

Pour the 1/4 cup whole milk over the back of a spoon held just above the ice. This slows it down so the milk settles in a pale layer on top before you stir. Serve immediately with a tall straw, giving it one slow stir at the table so the layers are still visible in the glass for a moment before they combine.

Recipe Tips

• Use freshly brewed coffee, not day-old. Stale coffee has a flat, slightly sour taste that syrup cannot cover.
• Chill your glass first. Set it in the freezer for 5 minutes before building the drink and the ice will last noticeably longer.
• Do not skip the double-strength brew. A single-strength cup will taste thin and faintly sweet rather than like actual iced coffee.
• Batch it for the week. Brew a large pot at double strength, sweeten it while warm, and keep it in a sealed jar in the fridge for up to 4 days. Pour over ice each morning in under a minute.

Scale it to your glass size:

Frequently Asked Questions

Can I make this the night before?

Yes. Mix the brewed coffee and syrup, then refrigerate the sweetened coffee in a sealed jar overnight. Add the ice and milk right before serving so nothing gets diluted.

What syrup brand is closest to Dunkin’s flavor swirls?

Torani French Vanilla or Caramel comes very close. DaVinci syrups are another solid option, and both brands are available at most grocery stores.

Can I use instant coffee instead of brewed?

Yes. Dissolve 2 tsp of instant coffee in 1 cup of hot water for a quick substitute; it will be slightly sharper in taste but works fine.

Does this work with decaf?

Completely. Brew the decaf at the same double-strength ratio and the recipe works exactly the same way.

Dunkin’ Donuts Iced Coffee Recipe

Print Recipe Pin Recipe

Prep Time 10 minutes mins

Total Time 10 minutes mins

Servings: 1 servings

Ingredients Method Notes

Ingredients

  

• 1 cup strong brewed coffee
• 1 cup ice
• 3 tbsp flavored liquid coffee syrup
• 1/4 cup whole milk
• 1 tsp granulated sugar (optional)

Method

 

1. Brew 1 cup of coffee at double strength and let it cool at room temperature for about 10 minutes.
2. Stir in the 3 tbsp flavored liquid coffee syrup (and 1 tsp sugar if using) until fully dissolved.
3. Add the 1 cup of ice to a tall 16 oz glass and pour the sweetened coffee over the ice.
4. Pour the 1/4 cup whole milk over the back of a spoon to create a layer on top, then serve immediately with a tall straw.

Notes

Letting the coffee cool before adding it to ice is the single step most people skip and it makes a real difference to the final strength of the drink. You can brew a big batch of the sweetened coffee base and keep it in the fridge for up to 4 days so mornings go faster. Whole milk gives the closest result to the original, but oat milk is a genuinely good swap.