Prep the bananas. Peel the bananas and slice into coins about 1/2 inch thick. This helps them freeze quickly and blend smoothly.
Freeze until solid. Spread the slices on a parchment-lined tray in a single layer.
Freeze for at least 2 hours, or overnight for best results.
Blend the base. Add the frozen banana slices to a food processor or high-speed blender. Pulse to break them up, then blend. At first, it will look crumbly.
Keep going—scrape down the sides as needed.
Watch for the magic moment. After a minute or two, the crumbs become a creamy, soft-serve texture. This is the sweet spot. If your machine struggles, add a small splash of milk to loosen it.
Add flavors (optional). Blend in cocoa powder, vanilla, nut butter, a pinch of salt, or spices.
Fold in chocolate chips or nuts by hand for texture.
Serve or firm up. Enjoy immediately for soft-serve. For scoopable ice cream, transfer to a lidded container and freeze for 1–2 hours.
Scoop and top. Scoop into bowls and add toppings like crushed nuts, fresh berries, shaved chocolate, or a drizzle of nut butter.