They’ll taste pretty much just like your good old chocolate muffins. To be honest, it truly depends on how finely you grate the Courgettes. If you don’t want to notice them at all, don’t skip peeling them before grating. The flavor is really delicate, so you’ll barely notice it. The added advantage of the courgettes makes your muffins extra moist and squishy. Look at it this way, instead of adding a bunch of butter oil or other fatty ingredients to make the muffins moist, you’re adding a vegetable! What a yummy way to incorporate your vegetables into your diet.