Banana Walnut Muffins (+ Secret Ingredient)

I’ve left a few guessing what the secret ingredient is in the recipe.

Maybe I’m a bad dietitian, but I just can’t do the┬áspiralized zucchini noodle thing INSTEAD of pasta. I like zucchini on it’s own, but I can’t do with it replacing all the tasty carbohydrates in my diet. Without some carbohydrates I’m afraid I would be left feeling deprived.