Ingredients --

1 envelope Unsweetened Kool Aid mix
2 Quarts Water
1 tsp Stevia Extract Powder

1) Mix Kool Aid into Water.
2) Mix in Stevia until Dissolved.
3) Pour into Ice Trays and Freeze.
4) Place Ice Cubes in Blender and set on "Crushed Ice."
5) Every so often, remove the remaining ice cubes and scoop out the crushed ice.
6) Repeat Steps 4-5 until the ice has been completely crushed.

Not quite a 7-11 Slurpee...But, it works for me.