Remove Cool Whip from freezer and let it thaw on the counter for about 30 minutes, or use the defrost setting on your microwave (though counter-thawing is preferred for better texture).

In a large mixing bowl, combine 4 cups of chocolate milk, the thawed Cool Whip, and 7 oz of sweetened condensed milk. Stir thoroughly until all ingredients are well combined and the mixture looks like melted Frosty.

Transfer the mixture into your Ninja Slushie maker’s container.

Select the “milkshake” setting, then increase it by one level up for the perfect Frosty consistency.

Let the machine run for approximately 22 minutes. The Ninja Slushie will beep when it’s ready, but keep an eye on the consistency. Scoop into cups and enjoy your homemade chocolate Frosty!

Follow the same thawing process for Cool Whip as above.

In a large mixing bowl, combine 4 cups of whole milk, thawed Cool Whip, 7 oz sweetened condensed milk, and 2 tablespoons of vanilla extract. Mix thoroughly.

Pour mixture into the machine and use the same “milkshake plus one level” setting.

Ninja Slushie Wendy's Frosty Recipe

Process for approximately 26 minutes (vanilla may take slightly longer than chocolate).

If you prefer a stronger vanilla flavor, add an extra tablespoon of vanilla extract next time.