Plus just 3 simple ingredients:
4 cups watermelon
1 cup water
1/2 cup sugar
In a saucepan combine sugar and water, stir until sugar dissolves. Let cool for about 5 min.
Put watermelon in blender and add the sugar water. Blend until smooth. Pour into a 9x13 pan and freeze. Not sure how long it needs to freeze since I made it in the morning and served it after dinner.
When its time to serve, I found it helpful to let it stand before attempting to chisel this block of watermelon ice! It's delicious and the kiddos loved it! I have heard of adding a bit of vodka to help it not freeze so hard, but people frown upon giving kids alcohol...so, let it sit and it gets all slushy like.
Happy summer y'all!