2 bananas, quartered and frozen
Peel and quarter bananas; freeze until solid.
Add frozen banana pieces to Twister jar and place Twister lid on jar. Hold Twister lid and with other hand, select a medium to medium-high speed (speed 7) and blend until smooth. Turn Twister lid counter-clockwise during blending.
Try substituting some of the frozen banana with another frozen fruit, such as strawberries, pineapple, or mango.
Mix-ins to add in before blending is complete:
Spices: ground cinnamon, nutmeg, or allspice
Extracts: vanilla, almond, or peppermint
Nut butters: almond, peanut, or hazelnut
Chocolate: chips, cocoa powder, cacao powder, cacao nibs, or your favorite chocolate sauce/syrup