Delicious, very simple to make! Depending on your tastes, you can change the amounts of milk, frozen berries and banana and it will still be delicious!
- Combine milk and frozen berries in blender and blend (If blender has a "frappe" mode, this is best. Otherwise, any blender setting will work.).
- Add banana and blend.
- Add peanut butter if desired and blend.
- Serve some immediately and if you want, freeze the rest in cups for several hours and it gets a slushie-like quality.