Prep the bananas. Peel ripe bananas, slice into coins or chunks, and freeze on a parchment-lined tray until solid (2–4 hours). Store in a freezer bag for easy scooping later.
Set up your blender or food processor. A high-speed blender works best, but a sturdy food processor also does the job. Have a spatula ready for scraping down the sides.
Add base ingredients. To the pitcher, add frozen banana chunks, protein powder, 2 tablespoons of milk, nut butter, vanilla, and a small pinch of salt.
Blend low and slow. Pulse a few times to break up the bananas.
Then blend on low, stopping to scrape as needed. Add 1 tablespoon of milk at a time only if the mixture won’t move. Aim for thick and creamy, not runny.
Taste and adjust. If you want it sweeter, add a touch of sweetener.
If it’s too thick, add another splash of milk. For a stronger banana flavor, add a tiny extra pinch of salt—it brings out the sweetness.
Fold in mix-ins. Stir in chocolate chips, nuts, or cocoa nibs with a spoon to keep the texture thick and scoopable.
Serve soft-serve style. Scoop into bowls and top as you like. For a firmer, scoopable texture, transfer to a freezer-safe container and freeze for 45–60 minutes.
Scoop and enjoy. If freezing longer, let it sit on the counter for 5–10 minutes before scooping to soften slightly.