I don’t know about you, but the minute fall rolls around, I need pumpkin spice in just about everything. This Pumpkin Spice Milkshake made in the Ninja Slushi machine hits all the cozy notes. The texture comes out thick and dreamy, just like what you’d grab from an ice cream shop. And you already know, I got you. This recipe works because I've done all of the testing for you, no guessing, just straight-up fall comfort in a glass.
You will love my other Ninja Slushi Recipes like Ninja Slushi Chocolate Milkshake, Ninja Slushi Wendy's Frosty, Ninja Slushi Strawberry Lemonade Slush, and Ninja Slushi Vanilla Protein Shake.
Key Ingredients
- Milk: This is the base that makes the milkshake creamy and smooth. It helps everything blend together and gives that classic milkshake texture we all love. Any milk you prefer will work. I used almond milk.
- Pure Pureed Pumpkin: This brings the real pumpkin flavor (and some natural thickness) to the shake. It’s what makes it taste like fall in a cup instead of just another spiced milkshake. You will need 100% pure pumpkin puree, not pumpkin pie filling. The two aren't the same.
- Pumpkin Pie Spice – The magic blend of cinnamon, nutmeg, ginger, and cloves that gives pumpkin desserts their cozy, warm flavor. Without it, the shake wouldn’t have that true “pumpkin spice” vibe.
- Sugar or Sweetener – Just enough to balance the pumpkin and spice. It makes the milkshake taste like a treat, but you can use your favorite sweetener if you want to lighten it up.
- Vanilla Extract – A little splash that rounds out the flavor, adds warmth, and ties everything together so it tastes bakery-style instead of flat.
Is this a Protein Shake?
It can be. Just add 1-2 scoops of your favorite protein powder. You don't have to make any other adjustments to the recipe. If you just want a sweet treat, skip the protein powder.
How to Make Ninja Slushi Pumpkin Spice Milkshakes
Detailed measurements and full instructions can be found in the recipe card at the bottom of this post.
- In a large mixing pitcher or bowl, whisk together the milk, vanilla extract, pumpkin, pumpkin pie spice, and sugar or sweetener to break up any clumps. If you are using protein powder, add it here as well. Whisk until fully combined.
- Pour the mixture into your Ninja Slushi. Press milkshake for the Ninja Slushi.
- Allow the machine to process. Let the machine run for 15-45 minutes, depending on the sugar content and temperature of the liquid. Mine took 20 minutes.
- Once the cycle is complete, place a cup under the self-serve spout and pull the handle to dispense the milkshake.
Want to save this recipe for later?
I'll email it to you, so you can come back to it later! You will also get our free digital cookbook with 30-Minute One-Pot Recipes and weekly recipes and tips.
Troubleshooting Tips if You Have Problems with the Ninja Slushi Machine
- Check the Liquid Ratio – If the mixture is too thick, the machine may struggle to process it. Try adding 1-2 tablespoons of additional liquid (water or milk) and restart the cycle.
- Make Sure the Mixture is Cold Enough – The machine works best when the liquid is super cold. If your base wasn’t chilled before adding it to the machine, try refrigerating or briefly freezing it before processing.
- Let It Process Fully – The Ninja Slushi Machine may take a few minutes to reach the right consistency. Be patient and let it complete the cycle. If needed, restart the process.
- Check for Ice Blockage – If the mixture is freezing unevenly, it may be too cold or concentrated in one area. Let it sit for a minute, give it a gentle stir, and try again.
- Ensure the Machine is Properly Assembled – Double-check that all parts (including the lid and paddle) are locked into place. If something is misaligned, the machine may not operate correctly.
Substitutions and Add-ins Ideas
- Milk → Use almond milk, oat milk, coconut milk, or lactose-free milk for a dairy-free version.
- Pure Pumpkin → Swap with sweet potato purée or butternut squash purée if that’s what you’ve got on hand.
- Pumpkin Pie Spice → Make your own with a mix of cinnamon, nutmeg, ginger, and cloves.
- Sugar/Sweetener → Honey, maple syrup, brown sugar, agave, or a zero-calorie sweetener like stevia or monk fruit.
- Vanilla Extract → Almond extract or maple extract can give a fun flavor twist.
- Ice Cream
- Protein Powder
- Greek Yogurt
- Caramel Sauce
- Whipped Cream
- Cinnamon or Nutmeg Dusting
- Crushed Graham Crackers or Gingersnaps
Frequently Asked Questions (FAQs)
Yes! A high-powered blender or an ice cream maker works too—just blend until thick and creamy. You will need to use a lot of ice and taste the drink to decide if you need to add more of the ingredients for flavor.
Any milk or non-dairy milks will work in the recipe. Whole milk is the best to get it rich and creamy, ideal for a classic diner-style shake.
Yes. I actually used unsweetened almond milk. Oat, coconut, or cashew milk will also work.
Adjust the dial on the right side of the machine. The higher up you select, the thicker the milkshake is.
Yes! Store it in the freezer and let it sit for a few minutes before stirring or blending to get the right consistency.
Ninja Slushi Pumpkin Spice Milkshake
Want to save this recipe for later?
I'll email it to you, so you can come back to it later! You will also get our free digital cookbook with 30-Minute One-Pot Recipes and weekly recipes and tips.
Equipment
Ingredients
- 4 cups milk
- 1 cup pure pumpkin puree
- 1-2 teaspoons pumpkin pie spice I use 2 teaspoons for great flavor. Start with 1 teaspoon and adjust to suit your taste.
- ¾-1 cup sugar or sweetener Adjust to suit your taste. Start with ½ cup.
- 1 teaspoon vanilla extract
Instructions
- In a large mixing pitcher or bowl, whisk together the milk, vanilla extract, pumpkin, pumpkin pie spice, and sugar or sweetener to break up any clumps. If you are using protein powder, add it here as well. Whisk until fully combined.
- Pour the mixture into your Ninja Slushi. Press milkshake for the Ninja Slushi.
- Allow the machine to process. Let the machine run for 15-45 minutes, depending on the sugar content and temperature of the liquid. Mine took 20 minutes.
- Once the cycle is complete, place a cup under the self-serve spout and pull the handle to dispense the milkshake.
Notes
Nutrition
Nutrition Data
Macros are provided as a courtesy and should not be construed as a guarantee. This information is calculated using MyFitnessPal.com. To obtain the most accurate nutritional information in a given recipe, you should calculate the nutritional information with the actual ingredients used in your recipe, using your preferred nutrition calculator. You are solely responsible for ensuring that any nutritional information provided is accurate, complete, and useful.
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