Drain the soaked walnuts and place them in an upright blender. Add the filtered water to the blender. Blend the mixture on high for about 2 minutes, or until you have a fluid, creamy "milk." Strain the milk with a fine mesh strainer over a large bowl or pitcher. Push the walnut pulp in the strainer with the back of a spoon to get all of the milk out. Pour the strained milk into a sealable container and refrigerate until ready to use.
The milk will separate, so just shake it every time you use it. Milk keeps in the fridge for about a week.
Banana Bread Shakes
In an upright blender, combine the walnut milk, sliced bananas, cinnamon, nutmeg, vanilla powder and maple syrup (and ice, if using). Blend on high until you have a creamy and smooth mixture. Add the cacao nibs and blend for 10 seconds more--just so that you have little cacao "chips" throughout the drink.
Pour the banana bread shakes into glasses and garnish with toppings if you like. Serve cold.
Walnut milk inspired by Emily Von Euw's 100 Best Juices, Smoothies and Healthy Snacks
You could definitely fill this out with a bit of protein powder and other superfood-y goodies to make this more breakfast-appropriate. It totally drinks like dessert :)