The one way to get my kids to eat spinach is to liquify it. I know, sounds gross, but they like it!
Here are some ingredients that I use for a green smoothie. (Elizabeth asks for a green smoothie more than any other flavor. Pink is a close second, though.)
Basic ingredients: milk, plain yogurt, a sprinkle of sugar, a bit of vanilla, a couple handfuls of spinach, a cucumber, and a few berries. (not too many, though, because it will change the color!)
The proportions I use are never consistent. If I were to guess I would say around 1/2 cup milk, 1/2 cup yogurt. Sugar and vanilla to taste (using my homemade vanilla here!)
Put it all in the blender, and enjoy!
Okay, don't be too put off by the green. I took a picture in a glass, but it turned out worse than the above pictures! Must take photos in natural daylight.