Combine frozen banana slices and lentils with almond milk, peanut butter, and cocoa powder in a high powered blender. Blend on high, using tamper device, and periodically scraping sides of blender as needed until all ingredients are well combined and mixture has a creamy consistency.
Spoon in to a serving glass or bowl, top with peanuts and cacao nibs, and enjoy while cold.
If you prep your banana and lentils the night before, you can whip this up in 5 minutes the next morning.
To freeze your banana, peel and slice 1 banana and lay out the pieces on a freezer safe plate or tray topped with banana slices.
You can buy frozen lentils, or see instructions in this post on how to freeze your own lentils.