01 - Place the frozen banana slices into a high-powered food processor or blender. If your blender lacks power, let the slices sit at room temperature for 2 to 3 minutes to soften slightly.
02 - Process on high until the bananas break down into small crumbly pieces, then continue blending until a smooth, creamy consistency forms. Stop and scrape down the sides of the bowl as needed.
03 - Add any desired flavor ingredients such as cocoa powder, frozen berries, nut butter, vanilla extract, or a pinch of salt. Blend again until all additions are fully incorporated and the mixture is uniform.
04 - Serve immediately for a soft-serve texture, or transfer the mixture to a freezer-safe container and freeze for 1 to 2 hours to achieve a firmer, scoopable consistency.
05 - Top with fresh fruit, chopped nuts, dark chocolate shavings, or coconut flakes before serving.