To my delight, this shake is more vanilla than banana. I made this to cure a craving my husband was having. I think one of the keys is to use a less ripe frozen banana. The less ripe the less banana flavor. This recipe was the answer to my previously SAD eater husband when he told me he was REALLY craving a vanilla milkshake. It's not just delicious, it also provides great energy and usable protein! Check out other recipes at http://reneegoesraw.wordpress.com/ 
1 frozen banana
1/2 scoop raw protein powder (I use Garden of Life)
1 teaspoon vanilla
1 tablespoon raw agave nectar or honey or 1 teaspoon stevia powder
1 cup almond milk (creamier) or water
Ice as needed
Throw everything in the blender as fast as possible. Add ice as needed and according to textural desire(nice phrase!) Then quickly put it in a cup and savor to kick that milkshake craving in the a**!