Banana Oat Tahini Smoothie

I have tahini to use up and I'm trying to find interesting ways to use it other than in hummus, so I put it in a smoothie.  I think it's alright and adds a slightly nutty flavour to the smoothie.

2 bananas
1 cup rice milk
1/4 cup water
4 tbs ground raw oats
3 tbs ground flaxseeds
3 tbs tahini

Blend it all together.  Add more rice milk if you don't like it too thick.  Makes about 2 medium servings.  I added some acai berry powder to mine, which is why it's purple.