Ninja Slushi Mudslide

You already know I don’t play when it comes to creamy cocktails, and this Ninja Slushi Mudslide is proof. It's made with vodka, Kahlúa or Bailey's, and drizzled with chocolate syrup. Mine comes out silky smooth every single time, no guesswork because I have done all of the testing for you! I’ve been blending up frozen drinks long enough to get the texture and flavor down to a science.

Be sure to read my How-to Guide and Honest Review of the Ninja Slushi Machine here.

Check out all of my Ninja Slushi Cocktail Recipes like: Ninja Slushi Rum Punch, Ninja Slushi Pina Colada, Hennessy Ninja Slushi, Ninja Slushi Espress Martini, Ninja Slushi Margarita, and Ninja Slushi Daiquiri.

Ninja Slushi Mudslide Ingredients

• Milk
• Kahlua or Irish Cream
• Vodka
• Sugar or Sweetener
• Chocolate Syrup
• Whipped Cream (Optional)

Can I Make This With a Regular Blender

Yes, but you will need to add a lot of ice to get that thick texture, which may cause you to adjust the ratio of sugar/sweetener and/or milk. You will have to adjust to taste and what works for you.

How to Fix Error Messages Related to Alcohol

If you’ve ever tried whipping up a margarita, piña colada, or any frozen cocktail in your Ninja Slushi machine and ended up staring at an error message, or worse, a sad, watery mess. Trust me, I’ve been there. I went through all the trial and error so you don’t have to. Here’s the real reason it happens (and how to fix it).

• Alcohol and Freezing Don’t Mix Well – Alcohol doesn’t freeze like water, so if your drink is too strong, the machine can’t do its job. Too much liquor = no slush. The machine will either skip the shave or refuse to dispense altogether.
• Your Ratios Are Off – The Ninja Slushi needs balance. You’ve got to have the right mix of alcohol and water-based liquid. Too little liquid, and you’ll be scraping ice chunks. Too much, and it’ll pour out like a cocktail instead of a slushie.
• Thick Mixers Can Mess Things Up – Heavy juices, creamy ingredients, or thick syrups can slow the machine down and make your texture clumpy or uneven. Go lighter with those or mix them in after blending.
• Don’t Overfill It – There’s a reason the machine has fill lines, y’all. If you go over that max line, it’s going to struggle to freeze and dispense properly. Keep it in range for the perfect slush every time.

How to Make The Best Cocktails in the Ninja Slushi Machine

If your drink’s too boozy, the Ninja Slushi machine is gonna let you know. You’ll see the temperature lights start flashing one by one from the bottom up, the preset buttons blinking like crazy, and then it’ll start beeping at you every minute for 15 minutes. That’s your cue to cool it on the alcohol and add a splash of something lighter like water or sparkling water to balance things out.

• Keep It at 1–1.5 oz Alcohol per Serving – Anything more, and your drink won’t freeze up right.
• Add a Little Extra Liquid – Water, juice, or mixer helps it blend smooth and thick instead of icy or runny.
• Start with Cold Ingredients – Pre-chilled liquids help the mix freeze faster and stay slushy longer.
• Go Easy on Thick Syrups or Creamy Stuff – If you use them, thin them out with water or juice so the machine doesn’t struggle.
• Respect the Fill Line (64 oz Max) – Overfilling just throws everything off. Stay in that sweet spot for the perfect pour every time.

How to Make Ninja Slushi Mudslide

Detailed measurements and full instructions can be found in the recipe card at the bottom of this post.

1. Combine the milk and sugar (or sweetener) before adding it to the machine. Stir well to ensure all of the sugar (or sweetener) dissolves.
2. Add the sweetened milk and liquor to the Ninja Slushi Machine. Be sure not to exceed 64oz. Prepare the drink in batches if necessary. Power on the machine and press Spiked Slush.
3. Allow the machine to churn and freeze the mixture until the machine beeps to signal the cycle is finished. You can adjust the thickness of the mixture using the side panel. The drink should take 20-45 minutes. Mine took 25 minutes.
4. Drizzle chocolate syrup into the cups you plan to use for serving.
5. Pull the lever on the spout to dispense the drink. Serve.

Variations and Substitutions

• Use almond milk, oat milk, or coconut milk instead of regular milk
• Swap Kahlua for Irish cream or coffee liqueur
• Use chocolate vodka or vanilla vodka instead of plain vodka
• Replace sugar with honey, maple syrup, or agave
• Blend in a shot of espresso for a stronger coffee flavor
• Drizzle caramel sauce instead of chocolate syrup
• Top with shaved chocolate or cocoa powder instead of whipped cream
• Add a pinch of cinnamon or nutmeg for warmth
• Use white chocolate liqueur for a lighter variation

Frequently Asked Questions and Recipe Pro Tips

More Cocktail Recipes

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Hennessy Margaritas
Bacardi Rum Punch
Vodka Gimlet
Cranberry Mimosa