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.
Notes
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 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.
LOW FODMAP VERSION: Use 1 medium (100 g or less) unripe banana.