Take the frozen bananas out of the freezer the next day and place in a powerful blender such as the Vita-Mix or Blendtec. Add honey, to taste. Blend bananas on low speed at first. Use the plastic accelerator or tamper tool (comes with the Vita-Mix) to gently press down on the bananas as they are being blended, but be careful not to touch the blade. (If you don't have a Vita-Mix, but have a powerful blender, you could possibly use a wooden spoon to press down on the bananas, making sure not to touch the blades of the blender while in use.) Keep blending until you have a very smooth consistency.