Wendy's Frosty Copycat
By Marty Cole · April 18, 2026
5.0 (1)
The Wendy's Frosty Copycat in the Ninja Slushi started as a dare from my brother, who swore no machine could match a real Frosty. Chocolate milk, Cool Whip, sweetened condensed milk and a little chocolate syrup on MILKSHAKE, and he ate his words along with the whole cup. It comes out at that exact Frosty texture, thick enough to fight your straw but soft enough to scoop with fries. Tastes like the drive-thru version without the drive. Tip: chill all your ingredients cold before pouring so the machine doesn't have to work as hard, and you get that signature half-frozen pull.
Your machine size
Slushi 64 oz (Standard) · quantities scaled ×1
💡 Serve within 30 minutes
High-fat dairy can churn into butter under long agitation. Dispense and enjoy soon after it's ready.
Ingredients
- Whole Chocolate Milk32 oz
- Cool Whip4 oz
- Sweetened Condensed Milk7 oz
- Chocolate Syrup2 tbsp
Makes ~51 oz
Directions
- 1In a large bowl, whisk the whole chocolate milk and chocolate syrup.
- 2Add the sweetened condensed milk and blend until completely integrated.
- 3Add the Cool Whip and whisk thoroughly until the mixture is homogeneous with no floating fat clumps.
- 4Pour the chocolate base into the Slushi vessel and close the lid.
- 5Select the MILKSHAKE setting, and manually increase the coldness by one bar.
- 6Let the machine run for 20 to 30 minutes until thick and smooth, then dispense.
Tips
- Pour all liquid ingredients directly into the Slushi bowl at room temperature, no pre-freezing needed; the machine will churn and chill it into the right texture in 20-60 minutes.
- If your slush comes out too thin, let it churn for another 10-15 minutes; if it's too thick and hard to scoop, you've likely let it sit in the machine too long after it's done churning.
- Keep the Slushi bowl in the freezer between uses so it's ready to go; a cold bowl helps the churning process work faster and more smoothly.
Variations
- Make a vanilla Frosty by swapping chocolate milk for whole milk, reducing chocolate syrup to 2 tablespoons, and adding 1 teaspoon vanilla extract to the base.
- Try a cookies and cream version by using chocolate milk, adding the Cool Whip and condensed milk as usual, then stirring in crushed Oreo pieces right after the slush finishes dispensing.
FAQ
- Can I use a different type of milk?
- Yes, 2% milk or even chocolate syrup mixed with regular milk works fine; whole milk gives you the richest, creamiest result closest to the original Frosty.
- What if the slush won't freeze and just stays liquid?
- Make sure the Slushi bowl was frozen solid before you started, check that your freezer is at 0 degrees or below, and give it the full 45-60 minutes of churning time; very warm kitchens take longer.
- How long can I store it in the machine?
- Once it's done churning and becomes slush, enjoy it within 30 minutes for best texture; the longer it sits, the harder and more icy it gets.
- Can I make this lighter or less sweet?
- Try using 2% milk instead of whole milk and reduce the chocolate syrup to 2-3 tablespoons; you can also skip some of the condensed milk or use half the Cool Whip for a less indulgent version.
Nutrition
Per serving · makes about 4 servings · estimated
Ratings & Reviews
5.0 (1)- Jenni from the block
Exactly like a frosti!!! Cannot believe I can make these at home now 😊
Jun 26, 2026
Meet Marty Cole
I'm a home cook who got a little obsessed with the Ninja Slushi and Creami. I test every recipe in my own kitchen on a real machine, dial in the texture, and only post the ones my family actually finishes.
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