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Hazelnut Iced Coffee with Homemade Syrup

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Making your own coffee at home makes life so much easier. Having to get through a mile-long drive-thru every single morning just for your iced coffee is infuriating, time-consuming, and unnecessary. No matter your favorite coffee flavor, it can be made at home.

The flavor combination of hazelnuts and coffee is so popular, every corner coffee shop has hazelnut coffee. It is one of the most popular varieties. You can easily find hazelnut flavored coffee at the grocery store too, but the flavor of the store-bought varieties has a manufactured quality to them.

Store-bought coffee syrups also often take on a plastic flavor from mass production. If you are sensitive to manufactured flavors, you are not alone. Spending big bucks on coffee accessories only for them to taste like the package they came in is a huge bummer.

Making your homemade syrups is the only remedy to make the perfect hazelnut iced coffee with your own homemade hazelnut syrup! You can add this syrup to hot coffee instead of iced and it is perfectly delicious. Feel free to add this syrup to tons of different drinks such as tea, cocktails, hot chocolate, or smoothies.


The perfect hazelnut iced coffee begins with the best homemade hazelnut syrup you have ever had. Whole hazelnuts are first roasted in the oven to intensify their nuttiness. Then, sugar is dissolved in water as a base for the syrup. The roasted hazelnuts are added to the sugar mixture and the whole thing is simmered for about 45 minutes. This allows the hazelnut flavor to soak into the syrup as it thickens. This sweet, nutty syrup infuses like a tea, so additional flavorings can be added if you wish, such as nutmeg or cinnamon.

You can keep the syrup in a cool, dark place for up to 1 month if it lasts that long. It is best served in coffee, but this syrup can be used in cocktails such as a hazelnut martini or anything that requires a simple syrup. This syrup is perfect in both hot and iced coffee, so it may just become your new sugar replacement.

When you are ready to make a hazelnut iced coffee, start with some freshly brewed strong coffee. Allow it to cool slightly before adding milk, ice, and homemade syrup. Mix with a drink stirrer or spoon and serve with a straw. You can add some whipped cream and cocoa powder over the top for a decadent treat!

If you make your own cold brew coffee and store it in the fridge, you can have hazelnut iced coffee anytime you feel like it. It is the most delicious and quick way to have a high-quality iced coffee from the comfort of your kitchen.

How to Make It

  • Prep Time5 min
  • Cook Time50 min
  • Total Time55 min
  • Serving Size8
  • Energy215 cal


For the Hazelnut Syrup:

For the Coffee:



Make the hazelnut syrup first. Preheat the oven to 350 degrees F. Add the hazelnuts to a dry baking sheet and bake for 15 minutes until toasty and roasted.


Remove from the oven and peel your hazelnuts, removing all skins.


In a saucepan, combine the water and sugar. Bring to a boil over medium heat. Once boiling, reduce the heat to low and add the hazelnuts. Continue cooking for 45-50 minutes until the syrup has thickened and taken on the hazelnut flavor.


Strain into a mason jar and allow to cool completely before placing a lid on top. Keep in a dry, dark place like a cabinet.


When you are ready to make your iced coffee, add the coffee, oat milk, syrup, and ice into a tall glass. Stir to combine completely.


Top with whipped cream, cocoa powder, and a straw. Consume immediately.

  • Nutrition Facts

  • Serving Size8
  • Amount per serving
  • Calories215
  • % Daily Value*Standard DV
  • Total Fat16.4 g78 g21.03%
  • Saturated Fat6.3 g20 g31.5%
  • Cholesterol33 mg300 mg11%
  • Sodium71 mg2300 mg3.09%
  • Total Carbohydrate14.8 g275 g5.38%
  • Dietary Fiber2.1 g28 g7.5%
  • Total Sugars10 g
  • Protein4.5 g50 g9%
  • Calcium215 mg1300 mg16.54%
  • Iron1 mg18 mg5.56%
  • Potassium227 mg4700 mg4.83%
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