Cinnamon Crumble Oatmilk Frappuccino (Starbucks Copycat)

Sweet, creamy, frosty deliciousness awaits with my Starbucks Copycat Cinnamon Crumble Oatmilk Frappuccino recipe! Simply made with fewer than 10 ingredients and no dairy, this cinnamon cookie-flavored coffee milkshake is the perfect way to indulge.

Do you ever have those moments where you want an iced coffee, but also don’t want a regular coffee drink? Maybe it’s just me, but it happens more often than you’d think. Whenever that happens, I turn to hybrid drinks like my coffee boba tea, coffee soda, or this cinnamon-flavored Starbucks cookie crumble frappuccino recipe.   

Between the creamy frozen texture, warmly spiced cinnamon coffee flavor, the creamy oat milk, a generous dollop of dreamy whipped cream, and sweet cinnamon crumble topping, this magical mixture is about as satisfying as it gets. Better yet, all that blended ice cream goodness is completely dairy-free!

So, next time a regular cold brew drink isn’t cutting it, give this oatmilk cinnamon crumble frappuccino a whirl! It’s like dessert and coffee all rolled into one—perfect for when you need a little extra sweetness in your day.

Jump to:

• What is Starbucks Cinnamon Crumble Oatmilk Frappuccino?
• What does it taste like?
• Why You’ll Love This Non-Dairy Frappuccino Recipe
• Ingredients Needed
• Substitutions
• How To Make A Cinnamon Cookie Crumble Frappuccino
• Optional Variations & Dietary Adjustments
• Serving Suggestions
• Recipe Success Tips
• FAQs
• Homemade Cinnamon Crumble Oat Milk Frappuccino Nutrition
• Other Starbucks Copycat Recipes
• Cinnamon Crumble Oatmilk Frappuccino (Starbucks Copycat)

What is Starbucks Cinnamon Crumble Oatmilk Frappuccino?

If you’re yet unacquainted, frappuccinos are Starbucks' signature line of blended beverages that combine ice, dairy or plant-based milk, and flavors ranging from coffee to fruit, all topped with whipped cream. They're creamy, icy, and perfect for sipping!

The Cinnamon Crumble Oatmilk Frappuccino mixes toasted cinnamon syrup with bold cold brew coffee, nutty oat milk, and plenty of ice, creating a richly flavored, quasi-milkshake. It’s then topped off with a dollop of nondairy whipped cream and a generous sprinkle of cinnamon-sugar cookie crumbles, adding a delightful crunch. 

Between the warmth of cinnamon and the chill of ice, this is the perfect sweet n’ spicy coffee treat for any time of year!

What does it taste like?

You’re first greeted by the inviting rush of toasted cinnamon. Its warmly spiced notes wrap around the subtle, nutty undertones of oat milk, creating a flavor reminiscent of a freshly baked cinnamon roll. Cold brew injects a robust coffee flavor that complements the sweetness, adding a smooth, rich complexity. 

When blended with ice, this delightful mixture transforms into a refreshingly cool experience. But the finish is where the magic happens—a lush topping of nondairy whipped cream that's light and creamy, followed by a sprinkle of cinnamon-sugar cookie crumbles. In short, it’s the ideal coffee meets dessert with a perfect balance of sugar, spice, caffeine, and crunch!

Why You’ll Love This Non-Dairy Frappuccino Recipe

• Quick & Easy - If you have a high-speed blender, this chilly drink takes just a minute to whip up. And, if you opt to make the cinnamon cookie crumbles for garnish, one batch will set you up with enough for 12 drinks. The extra 5 minutes it takes is well worth the yummy results!
• Inclusive - If coffee frappés call your name, but lactose and dairy aren’t your friends, this recipe is for you! Swapping in oat milk makes the frappuccino base safe, and you can easily use a vegan whipped topping and make a plant-based crumble topping.
• Budget-Friendly - I know, I know. I say this every time! But making your own café-style drinks is one of the easiest, tastiest ways to keep your budget in check. Rather than spending $5+ on a single drink, you can make your own for a fraction and still get all the satisfaction!

Ingredients Needed

As promised, you only need a handful of ingredients to make a cinnamon roll frappuccino Starbucks would be proud of. 

If you want to make the optional Cinnamon Crumble Topping, you’ll need:

• Nilla Wafers - Note that these cookies are not dairy-free or egg-free, so you may want to swap in another vanilla cookie variety. 
• Cinnamon - Ground cinnamon adds warmth and sweetness without boosting the sugar content. 
• Unsalted Butter - Toasting the cookies in butter makes the crumble topping taste extra rich. Make sure to use plant-based butter if you want it to be completely dairy-free!
• Granulated Sugar - When you add sugar to the buttery crumble mix, it caramelizes and becomes extra delicious.

For the actual Cinnamon Crumble Oatmilk Frappuccino you’ll need:

• Ice - If possible, start with filtered water for the best taste.
• Cold Brew Coffee - Cold brewed coffee is less acidic and has a bolder, more nuanced flavor than conventionally brewed hot coffee. It’s the best choice for the most intense coffee taste.
• Oat Milk - For rich, creamy results without any dairy. I recommend choosing a “barista blend” for the best results. 
• Toasted Cinnamon Syrup - My homemade coffee syrup is made with just 4 ingredients in about 10 minutes, making it far cheaper than store-bought. That said, feel free to use the bottled stuff!
• Xanthan Gum - This popular corn-based food additive is used as both a thickener and an emulsifier. Here, it helps keep the frothy frappuccino mixture from separating and adds a luscious mouthfeel. Word to the wise: a little goes a long way!
• Whipped Cream - Totally optional, but lovely for added creaminess and a pretty garnish. Make sure to opt for a vegan version if you are fully dairy-free.

Substitutions

Need to make some changes? I’ve got you covered:

• Nilla Wafers - You’re welcome to omit the cookie crumble topping if you prefer. You can also swap in gluten-free cookies, honey or cinnamon graham crackers, shortbread, or spice cookies (e.g. gingersnaps or speculoos) instead. 
• Cinnamon - Feel free to trade in another warming spice or spice blend like pumpkin spice, ginger, or cardamom. 
• Unsalted Butter - You can use regular or plant-based salted butter for a salty-sweet twist. You can also swap in coconut oil if you prefer.
• Granulated Sugar - You’re welcome to omit the sugar, swap in a cup-for-cup sugar-free alternative, or use another type of sugar like brown sugar or sugar in the raw. 
• Ice - For deeper coffee flavor, swap in coffee ice cubes. 
• Cold Brew Coffee - Feel free to use conventionally brewed coffee or French press espresso that has been chilled. 
• Oat Milk - You can use any variety of plant or dairy milk you prefer. Just remember that the higher the fat, the creamier your cinnamon frappuccino will taste!
• Toasted Cinnamon Syrup - Cinnamon syrup or cinnamon dolce syrup are close alternatives, but you can use any flavor of coffee syrup you like!
• Xanthan Gum - If you have a corn allergy, guar gum is a perfect 1:1 substitute for xanthan gum. You can also use ground psyllium husks, ground chia seeds, or ground flaxseeds, or soy or sunflower lecithin.
• Whipped Cream - Feel free to omit this, or swap in frozen whipped topping or a scoop of ice cream for added decadence. 

How To Make A Cinnamon Cookie Crumble Frappuccino

This cinnamon roll frappuccino comes together in just a few simple steps:

Step 1: Make the Cookie Crumble Topping. Stir the crushed Nilla wafers and cinnamon together in a small bowl. In a small skillet, melt the butter over medium heat. Stir in the cookie mixture. Continue to cook for another 2-3 minutes, until golden brown, then remove from heat. Transfer to a small bowl and stir in the granulated sugar. Set aside. (The topping recipe above makes 12 servings, about ¼ cup of topping.)

Step 2: Add the ice to a high-speed blender, then pour in the cold brew, oat milk, toasted cinnamon syrup, ground cinnamon, and xanthan gum. 

Step 3: Blend until smooth and no ice chunks remain.

Step 4: Pour the frappuccino into a tall glass. 

Step 5: Garnish & Serve. Top with whipped cream and/or cinnamon crumble topping if desired. Drink up!

Optional Variations & Dietary Adjustments

As much as I love this cinnamon toast crunch frappuccino just the way it is written, there are plenty of ways for you to make it your own. Here are a few ideas to get you started: 

• Sugar-Free - Use sugar-free cinnamon syrup, opt for unsweetened oat milk, and use sugar-free whipped cream. You can either omit the crumble topping or use sugar-free cookies and your favorite cup-for-cup sugar alternative to make it.
• Gluten-Free - Use your favorite gluten-free vanilla cookies instead of Nilla Wafers. 
• Caffeine-Free - Using decaf beans to make your cold brew will ensure a much lower caffeine content, but it’ll still be there. If you need to go fully caffeine-free, swap in an alternative like roasted chicory or Dandy Blend.
• Use Different Milk - Coconut, soy, or even dairy milk are all great choices!

Serving Suggestions

Whether you're jazzing up your morning or adding a spark to your evening, this beverage is versatile enough for any occasion:

• Morning Glow: Start your day on a sweet foot by pairing this frappuccino with buttery croissants, a slice of lush banana nut bread, or a granola yogurt parfait.
• Sweet Afternoon Escape: Turn an ordinary afternoon into a moment of “me time” by coupling your cinnamon frappuccino with oatmeal protein cookies or energy bites, perfect for a sweet, midday indulgence.
• Decadent Dessert: Serve this caramel coffee drink alongside a warm apple crumble or a rich caramel cheesecake for a festive fall-inspired finish to any meal.
• Cocktail Hour Twist: Infuse an adult kick by spiking your frappuccino with a shot of cinnamon whiskey, spiced rum, or Kahlua for a near-Mudslide.
• Snack and Sip: Pair it with a handful of cinnamon-dusted almonds or sweet, crunchy pecans for the perfect book club or study session snack.

Recipe Success Tips

• To get the full benefit of xanthan gum, wait to add it until the very end and flip the blender switch as soon as possible. As soon as it touches liquid, it’ll begin to gel, so the faster you can get it distributed throughout the drink, the better.
• Start with cold ingredients for the frostiest results. Bonus points if you freeze your serving cup first!
• Think ahead. Make your cold brew and the cookie crumbles a day in advance to make your frappuccino-making experience go smoothly. 
• Use a high-speed blender for the creamiest, dreamiest results. 

FAQs

Homemade Cinnamon Crumble Oat Milk Frappuccino Nutrition

Per serving, it's relatively light on calories, coming in at 170 calories. It contains a modest 3 grams of fat, which is pretty decent for a treat. On the protein front, it has 2 grams per serving—not a lot, but every bit counts, right? It also packs 36 grams of carbs, 30 grams of which are from sugar. That's quite a bit, so it's something to be mindful of. As for sodium, it's fairly low at 66 mg per serving. 

If you decide to sprinkle on that delicious cinnamon crumble topping, just remember it adds an extra 19 calories, 1 gram of fat, 7 mg of sodium, 2 grams of carbs, and 1 gram of sugar per teaspoon. All in all, it’s a nice little indulgence!

Total nutritional content per serving (without the cookie crumble topping) is:

• Calories: 170 calories
• Total Fat: 3 grams
• Protein: 2 grams
• Sodium: 66 mg
• Carbohydrates: 36 grams
• Sugar: 30 grams

*This nutritional information is an estimate and calculated based on the ingredients used to create the recipe. The nutritional value of your ingredients may differ slightly. Furthermore, this food is not intended to prevent, diagnose, cure, or treat any disease.

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xoxo Megan