Sweet Potato & Cauliflower Casserole

We aren't quite out of the winter woods yet here, so I've been craving some warm casseroley (pretty sure that's a real word) goodness. This new nutrition plan I've been working with has given me some new combinations of food to mix things up with. P.S. I cannot WAIT to share my results with you all. I hope you enjoy this as much as I do. If you want a lower carb version you'll sub out the sweet potato for pumpkin or butternut squash. If you need it to be dairy free use a vegan cheese substitute. You can also kinda mash the roasted cauliflower so it's a smoother casserole. I choose to keep my more intact because I thought it was prettier.