Here's my favorite recipe so far:
1 cup spinach
1 cup frozen blueberries
1/2 banana - best if it has some brown spots
1/4 cup greek yogurt (I like it best with Yoplait Honey Greek Yogurt)
1/4 cup water
Put it all in a blender, pour and enjoy.
I also have made one with frozen strawberries and it was really good too.
And then I went garden crazy and used some strawberries from the garden. It was a little more tart and I had to add some ice but it was still good.
There's a picture of the yogurt I use.
My next green smoothie goal is to try one with avocado. I hear they're good but we'll see. Have you tried it? I'm also curious about other ideas for green smoothies so if you have a favorite, send it my way.