My daughter had a sleepover this week and they wanted frosties; since it is a 15 minute drive to get to a Wendy's from our house...I decided to try to figure out how to make one for them from stuff in the kitchen. It was pretty close.
4 cups vanilla ice cream
3/4 cup milk
chocolate milk syrup
Put all ingredients in the blender and blend until smooth. I kept adding the chocolate until I had the frosty color. The girls loved them. EASY!