Add Cool Whip and Sweetened Condensed Milk to the freezer bowl of your ice cream maker. Stir together until smooth.
Pour in chocolate milk, until up to the fill line on your ice cream maker. Stir together.
Turn on your ice cream maker and freeze for 30-45 minutes, or until Frosty is at desired consistency! Serve frozen, with a spoon.
Blender Instructions
Combine Cool Whip, chocolate milk and sweetened condensed milk, in blender and mix well.
Put the mixture into a freezer safe container and freeze.
Stir thoroughly every 30 minutes until desired thickness is reached (usually about 4 hours).
Notes
If making in a blender, you'll need to make this in two batches if you do the full recipe, since most blenders only hold about 8 cups. Overall, the full recipe makes about 16 cups of shake/frosty. SOOO good!