Iced Brown Sugar Oat Latte

Featured in: Sweet Whispers

This iced brown sugar oat latte blends rich brown sugar syrup with creamy oat milk and a shot of espresso. Shaken over ice, it creates a silky, frothy beverage that's both dairy-free and vegan-friendly. Perfect for a quick, refreshing coffee moment, this easy-to-make drink balances sweetness and bold coffee flavors with a hint of cinnamon and vanilla. Ideal for anyone seeking a smooth, plant-based pick-me-up.

Updated on Mon, 22 Dec 2025 12:18:00 GMT
A chilled Iced Brown Sugar Oat Latte, its creamy texture visible, swirled with brown sugar. Save
A chilled Iced Brown Sugar Oat Latte, its creamy texture visible, swirled with brown sugar. | butterhollow.com

I started making these at home after spending way too much money at coffee shops every morning. One weekend, I decided to figure out the shaker method myself, and the first attempt was so frothy and cold that I actually laughed out loud in my kitchen. Now it's my favorite way to wake up without leaving the house. The brown sugar syrup keeps in the fridge for weeks, so I always have it ready. It feels like a tiny luxury I give myself before the day gets busy.

I made this for my sister one morning when she was visiting, and she immediately asked me to write down the recipe. She said it tasted like the expensive oat lattes she buys downtown, but smoother. We sat on the porch with our glasses, and she kept shaking the ice around, amazed at how cold and frothy it stayed. That was the moment I realized this drink was worth sharing. It's become our little ritual whenever she comes over.

Ingredients

  • Brown sugar: Use dark brown sugar if you want a deeper molasses flavor, or light brown for something milder and sweeter.
  • Water: This helps dissolve the sugar evenly and creates a pourable syrup that blends instantly into cold drinks.
  • Ground cinnamon: Optional, but it adds warmth and a hint of spice that pairs beautifully with the caramel notes of brown sugar.
  • Vanilla extract: A small amount goes a long way and rounds out the syrup with a smooth, fragrant sweetness.
  • Espresso or strong coffee: Use freshly brewed espresso for the best flavor, or make a strong batch of coffee if you dont have an espresso machine.
  • Oat milk: Make sure its cold from the fridge so it shakes up frothy and creamy without diluting the ice too fast.
  • Ice cubes: Use plenty of ice in both the shaker and the glass to keep everything icy cold and refreshing.

Instructions

Make the Brown Sugar Syrup:
Combine brown sugar and water in a small saucepan over medium heat, stirring until the sugar melts into a smooth syrup. Remove from heat, stir in cinnamon and vanilla, then let it cool completely before using.
Brew Your Coffee:
Pull a fresh shot of espresso or brew a strong quarter cup of coffee. Let it cool slightly so it doesnt melt all the ice when you shake.
Load the Shaker:
Fill your cocktail shaker or jar with ice cubes, then add one to two tablespoons of the cooled syrup, the espresso, and the cold oat milk. The ice should fill the shaker about halfway so theres room to move everything around.
Shake It Up:
Seal the lid tightly and shake hard for 15 to 20 seconds until you hear the ice clattering and feel the shaker get ice cold in your hands. This is what makes the drink frothy and perfectly chilled.
Serve Over Fresh Ice:
Strain the shaken mixture into a tall glass filled with fresh ice cubes. The drink should pour out smooth and creamy with a light foam on top.
Garnish and Enjoy:
Sprinkle a tiny pinch of cinnamon on top if you like, then serve immediately while its still cold and frothy.
Imagine a frothy Iced Brown Sugar Oat Latte, its surface dusted with fragrant cinnamon. Save
Imagine a frothy Iced Brown Sugar Oat Latte, its surface dusted with fragrant cinnamon. | butterhollow.com

The first time I brought this to a friend's brunch, everyone stopped talking when they tasted it. Someone said it was better than the coffee truck we usually splurge on, and I felt ridiculously proud. It's funny how a simple drink can turn into a conversation starter. Now I get requests to make a pitcher of it whenever I host anything in the morning.

How to Store the Syrup

The brown sugar syrup keeps beautifully in a sealed jar in the fridge for up to three weeks. I like to make a double batch so I always have it ready in the mornings. Just give it a quick shake or stir before using since it can settle a bit. You can also use it in iced tea, drizzle it over oatmeal, or sweeten cold brew with it.

Adjusting Sweetness and Strength

Start with one tablespoon of syrup and taste before adding more, since everyones sweetness preference is different. If you like your coffee stronger, use a double shot of espresso or add an extra splash of cold brew. I sometimes go lighter on the syrup and heavier on the coffee when I need a serious caffeine boost. Play around with the ratios until it feels just right for you.

Fun Variations to Try

You can swap the brown sugar syrup for maple syrup if you want a more earthy, woodsy sweetness. Coconut sugar also works and gives it a subtle caramel flavor. For a mocha twist, add a teaspoon of cocoa powder to the shaker, or stir in a tiny bit of hazelnut extract for something fancy.

  • Try almond or coconut milk if you want a different creamy base.
  • Add a pinch of cardamom or nutmeg to the syrup for a warming spice note.
  • Top with a dollop of coconut whipped cream for an extra indulgent treat.
See a tall glass holding the irresistible Iced Brown Sugar Oat Latte, a dairy-free treat. Save
See a tall glass holding the irresistible Iced Brown Sugar Oat Latte, a dairy-free treat. | butterhollow.com

This drink has become my quiet morning ritual, the one thing I make just for myself before the day pulls me in every direction. I hope it brings you that same little moment of calm and sweetness.

Iced Brown Sugar Oat Latte

Refreshing brown sugar syrup with oat milk and espresso shaken over ice for a creamy beverage.

Prep duration
5 min
Heat duration
5 min
Complete duration
10 min
Created by Ella Thompson


Skill level Easy

Heritage American

Output 1 Portions

Eating preferences Plant-Based, No dairy

What you'll need

Brown Sugar Syrup

01 2 tablespoons brown sugar
02 2 tablespoons water
03 1/4 teaspoon ground cinnamon (optional)
04 1/2 teaspoon vanilla extract

Coffee & Milk

01 1 shot (1 fluid ounce) espresso or 1/4 cup strong brewed coffee
02 3/4 cup (6 fluid ounces) chilled oat milk
03 Ice cubes

Method

Phase 01

Prepare Brown Sugar Syrup: Combine brown sugar and water in a small saucepan. Heat over medium heat, stirring until sugar dissolves completely. Remove from heat, stir in cinnamon and vanilla extract, then let cool.

Phase 02

Brew Coffee: Brew a fresh shot of espresso or prepare strong coffee.

Phase 03

Add Ice: Fill a cocktail shaker or large jar with ice cubes.

Phase 04

Combine Ingredients: Pour 1 to 2 tablespoons of brown sugar syrup, espresso, and chilled oat milk into the shaker.

Phase 05

Shake Mixture: Secure the lid and shake vigorously for 15 to 20 seconds until well chilled and frothy.

Phase 06

Serve: Strain the mixture into a tall glass filled with fresh ice. Garnish with a sprinkle of cinnamon if desired, and serve immediately.

Kitchen tools needed

  • Small saucepan
  • Cocktail shaker or large jar with lid
  • Espresso machine or coffee maker
  • Tall glass

Allergy details

Always review individual ingredients for potential allergens and seek professional medical guidance if uncertain.
  • Contains oats; verify oat milk for gluten if required. Free from dairy, soy, and nuts when using nut-free oat milk.

Nutrient breakdown per portion

Numbers shown are estimates only - consult healthcare providers for specific advice.
  • Energy: 120
  • Fats: 2 g
  • Carbohydrates: 25 g
  • Proteins: 2 g