Oatmeal Cookie-Flavoured Iced Coffee with Oat Milk
by Olivia Biermann
on May 22, 2019 (updated Jan 7, 2026)
This oatmeal cookie-flavoured iced coffee brings everything I love about a bakery-style treat into a refreshing coffee drink. Combining warm notes of cinnamon, brown sugar and vanilla, with the smooth chill of creamy oat milk and espresso poured over ice. The perfect choice for anyone who wants a cool, creamy drink with no complicated syrups required!
What gives this latte its “oatmeal cookie” flavour
The oatmeal cookie flavour isn’t about just oats – although the oat milk takes care of that pretty easily! It’s about the layered warmth that defines a classic oatmeal cookie. Subtle cinnamon-spice, gentle sweetness and creamy undertones work together to mimic that freshly-baked aroma. When paired with coffee, these flavours soften the bitterness of espresso and create a well-rounded drink that rivals the menu of expensive cafes.
I love the pairing of oatmeal cookies and coffee so much, I also made a latte-flavoured oatmeal cookie!
I love a cafe-style drink you can easily make at home
One of the biggest appeals of my oatmeal cookie coffee is how approachable it is for home baristas and novices-alike. To start, you brew the coffee your favourite way – making sure its perfect for you!
The components of this recipe are easy to work with and the ingredients come from your pantry – nothing wild and out there you need to purchase. The end result, however, still feels just as satisfying as something ordered at a coffee shop.
Making this drink at home also allows you to control the sweetness and strength, which is something most cafes lack. As we all know, once the barista hands you the drink, there’s not much you can change.
Liv’s tip for the smoothest iced coffee experience
There’s a reason behind my method! Mixing the coffee and sugar first ensures the sugar dissolves fully. Then, when combine it with the cold milk, it cools the drink enough to prevent the ice from melting too quickly once it is poured overtop.
Perfect for slow mornings or afternoon treats – with a tweak!
This iced latte can fit seamlessly into both your morning routine and as an afternoon treat! I prefer to use decaf coffee if I am enjoying this drink later in the day. The sweetness is easy to customize by adjusting the brown sugar, making it suitable alongside breakfast or a treat. When serving with a sweet treat, I recommend slightly reducing sugar to keep it nicely balanced.
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Oatmeal Cookie-Flavoured Iced Coffee with Oat Milk
- Prep Time: 5 mins
- Total Time: 5 mins
- Yield: 1 latte
- Category: drinks
Description
This oatmeal cookie-flavoured iced coffee brings everything I love about a bakery-style treat into a refreshing coffee drink. Combining warm notes of cinnamon, brown sugar and vanilla, with the smooth chill of creamy oat milk and espresso poured over ice. The perfect choice for anyone who wants a cool, creamy drink with no complicated syrups required!
Ingredients
- 8 oz. brewed coffee
- 1–2 tsp brown sugar
- sprinkle of cinnamon
- 1 tsp vanilla extract
- 1/2 cup barista-style oat milk
- 2 cups ice cubes
Instructions
- Add the sugar, cinnamon and vanilla to the hot brewed coffee and stir to dissolve sugar.
- Add the milk and stir gently to combine.
- Add ice to your serving glass or jar (I use a mason jar). Pour coffee mixture overtop and add a dash more cinnamon. Enjoy!
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Just made this this morning! I didn’t have oat milk but I used soy and it was still creamy and delicious 🙂
Is this recipe for 1 or 2 people? 🙂
I always have it all to myself! It’s pretty big though 🙂
Yum! I don’t taste the “oat-y” flavor mentioned but the combination is delicious and very creamy. It was a bit on the sweet side for my taste but that was probably my fault for subbing in a half teaspoon of the Truvia brand brown sugar/stevia blend for the normal brown sugar. Next time, I will start with an eighth of a teaspoon and work my way up to figure out the proportions that fit my taste and perhaps cut the vanilla to a half teaspoon. Thanks for the inspiration for a decadent tasting summer treat now that it is warming up.
How many calories does this have? And how many sugar? Is it good for diabetics?
Not sure on the calories! As for the sugar, I use about 1 tsp which I believe is 5g of sugar. You could leave it out, use stevia or use coconut sugar which is low glycemic if you are diabetic 🙂 <3
Assuming you use proportions within the parameters established in the recipe, most of the calories and sugar will be from the oat milk (though be sure to factor in the brown sugar as well). It will vary by brand so check the nutrition label. Pacific Foods oat milk (the kind I have on hand) is 130 calories per cup, with 17 g of sugar. On the other hand, some of the 2g of fiber also in that cup of oat milk might be beta gluten, a special kind of fiber which is why oatmwal, for example, can actually help manage blood sugar levels (and be good for some diabetics) despite being carb heavy. You will need to make your own determination on whether this can safely be worked into your diet if you are diabetic… personally, I would not rule it out entirely but would definitely skip the brown sugar.