Sweet Potato & Cauliflower Mac & Cheese

This updated mac & cheese is the most exciting version I've seen to date. @Sophiesverden takes a classic comfort food and transforms it into a training-season no-brainer that delivers potassium, all the key vitamins and folate. I don't go very long without sweet potatoes, I love healthy substitutions, and I will be making this very soon for dinner before a long ride.