In a blender, add in all of the ingredients and blend for 30-45 seconds or until the mint is broken down and the ice is broken into small slushy size pieces. I find that I have to either add in a couple more pieces of ice or a little more water to get the right consistency.
Pour into glasses and serve right away.
If your leftovers get too watery, add in some more ice and blend again before serving.
Notes
To make these boozy, add in 1/2 shot of gin or vodka into your portion of slushy and stir until combined. If you are not serving this to the kiddos, you an can add in 3 shots of alcohol to the entire recipe. Enjoy!