Add all ingredients except for milk to a glass mason jar, or a freezer-safe bag. (Be sure to pack your jar full so there’s not much air left in it, or remove as much air as possible from your freezer-safe bag before sealing it!)
Store in the freezer. If storing in jars, leave some space between them so there’s room for the cold air to circulate.
The morning you’re ready to prepare your smoothie, let the jar thaw on the counter for a few minutes so your ingredients come out more easily.
Add frozen ingredients to your blender with milk of choice and blend.