This smoothie is sweet, cool and tangy, and it has a nice little kick from the ginger. And it's chock full of healthy ingredients! You can't taste the spinach, so don't worry about that! It gives it the prettiest color, though.
I made one batch and split it up for the next two days. It is extremely filling, so you don't need too much to satisfy you.
adapted from Gimme Some Oven
1 granny smith apple, cored
1 orange, peeled
1 banana, peeled
1 cup frozen spinach (or 2 cups fresh, rinsed)
1/2 t ground ginger
Place all of the ingredients in a blender and mix until smooth.
It's a bit thick, so a bit fruit juice or water might be a good idea if you want it to be thinned out.