Blend frozen banana chunks and maple syrup in a powerful blender until smooth, stir in walnut pieces.
Pour mixture into a small metal loaf pan and freeze for at least 2 hours. Scoop and serve with extra walnut pieces on top as garnish.
Vanilla Walnut Whipped Cream replaces cream in this fluffy Tiramisu recipe.
Add a small drizzle of honey if you prefer a sweeter taste. For a more grown up stack, sprinkle each layer with a teaspoon of minced jalapeno pepper.
