Freeze your bananas well ahead of time, ensuring you peel and chop them prior to freezing. Once frozen, blitz them in a food processor until you have a smooth, creamy consistency, then add a tablespoon of peanut butter and blitz again briefly. Return to the freezer until ready to serve.
For the waffles, whisk together all the waffle mix ingredients until you have a smooth mixture, then refrigerate until ready to use. Heat the waffle irons and coat with either melted butter or coconut oil. Add several bits of chopped banana and a few small dollops of peanut butter then pour in a small ladle of the waffle mixture and close the irons, cooking until golden and crisp. Once cooked you can keep warm in the oven (150 degrees Celsius) until ready to serve.
For the spice mix, simply muddle the ingredients together.
Serve the waffles warm with a generous ball of banana and peanut butter ice cream with a sprinkle of the spice mix.