Breakfast Smoothie Muffin

I am ridiculously pleased with this recipe! We had some Innocent Smoothies in the café that were short-dated and, not wanting to waste them, came up with the idea of using them in a breakfast muffin. Astoundingly this recipe worked first time: the flavours of the smoothie come right through and it bakes beautifully. It’s also very satisfying that the recipe uses up one whole bottle of smoothie.