1. Divide the chocolate milk between ice cube trays and freeze overnight. 2. In a blender, combine about half the ice cubes, the cream, sweetened condensed milk, and vanilla. Blend until smooth and creamy. Add more cream if needed to thin, or additional ice cubes to make thicker. Taste and add sweet milk as desired. Enjoy!3. Keep the remaining ice cubes in the freezer to make more Frosty's another time!
Homemade Chocolate Milk: in a blender combine 5 cups milk, 1/4 cup cocoa powder, 3-4 tablespoons powdered sugar, 1 tablespoon vanilla extract, and a pinch of salt. Blend until combined. Chocolate milk will keep 1 week in the fridge.